/*
- * Copyright (C) 2001, 2002 The Mir-coders group
+ * Copyright (C) 2001-2006 The Mir-coders group
*
* This file is part of Mir.
*
*
* In addition, as a special exception, The Mir-coders gives permission to link
* the code of this program with any library licensed under the Apache Software License,
- * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
- * (or with modified versions of the above that use the same license as the above),
* and distribute linked combinations including the two. You must obey the
* GNU General Public License in all respects for all of the code used other than
* the above mentioned libraries. If you modify this file, you may extend this
package mir.storage;
import mir.config.MirPropertiesConfiguration;
+import mir.entity.AbstractEntity;
import mir.entity.Entity;
import mir.entity.EntityList;
import mir.entity.StorableObjectEntity;
import mir.log.LoggerWrapper;
-import mir.misc.StringUtil;
import mir.storage.store.*;
import mir.util.JDBCStringRoutines;
+import mir.util.StreamCopier;
import mircoders.global.MirGlobal;
+import org.apache.commons.dbcp.DelegatingConnection;
+import org.postgresql.PGConnection;
+import org.postgresql.largeobject.LargeObject;
+import org.postgresql.largeobject.LargeObjectManager;
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
+import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.*;
/**
* Implements database access.
*
+ * @version $Id: Database.java,v 1.48 2007/04/08 21:46:37 idfx Exp $
* @author rk
+ * @author Zapata
*
*/
-public class Database implements StorageObject {
- private static Class GENERIC_ENTITY_CLASS = mir.entity.StorableObjectEntity.class;
+public class Database {
+ private static final int DEFAULT_LIMIT = 20;
+ private static final Class GENERIC_ENTITY_CLASS = StorableObjectEntity.class;
protected static final ObjectStore o_store = ObjectStore.getInstance();
- private static final int _millisPerHour = 60 * 60 * 1000;
protected LoggerWrapper logger;
- protected MirPropertiesConfiguration configuration;
protected String mainTable;
- protected String primaryKeySequence = null;
protected String primaryKeyField = "id";
- protected boolean evaluatedMetaData = false;
- protected ArrayList metadataFields;
- protected ArrayList metadataLabels;
- protected ArrayList metadataNotNullFields;
- protected int[] metadataTypes;
- protected Class theEntityClass;
- protected boolean hasTimestamp = true;
- private int defaultLimit;
+ private List fieldNames;
+ private int[] fieldTypes;
+ private Map fieldNameToType;
- TimeZone timezone;
- SimpleDateFormat internalDateFormat;
- SimpleDateFormat userInputDateFormat;
+ protected Class entityClass;
- /**
- * Kontruktor bekommt den Filenamen des Konfigurationsfiles ?bergeben.
- * Aus diesem file werden <code>Database.Logfile</code>,
- * <code>Database.Username</code>,<code>Database.Password</code>,
- * <code>Database.Host</code> und <code>Database.Adaptor</code>
- * ausgelesen und ein Broker f?r die Verbindugen zur Datenbank
- * erzeugt.
- */
- public Database() throws StorageObjectFailure {
- configuration = MirPropertiesConfiguration.instance();
+ //
+ private Set binaryFields;
+
+ private TimeZone timezone;
+ private SimpleDateFormat userInputDateFormat;
+
+ public Database() throws DatabaseFailure {
+ MirPropertiesConfiguration configuration = MirPropertiesConfiguration.instance();
logger = new LoggerWrapper("Database");
timezone = TimeZone.getTimeZone(configuration.getString("Mir.DefaultTimezone"));
- internalDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- internalDateFormat.setTimeZone(timezone);
userInputDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
userInputDateFormat.setTimeZone(timezone);
- String theAdaptorName = configuration.getString("Database.Adaptor");
- defaultLimit = Integer.parseInt(configuration.getString("Database.Limit"));
+ binaryFields = new HashSet();
+
+ String adapterName = configuration.getString("Database.Adaptor");
try {
- theEntityClass = GENERIC_ENTITY_CLASS;
+ entityClass = GENERIC_ENTITY_CLASS;
}
catch (Throwable e) {
- logger.error("Error in Database() constructor with " + theAdaptorName + " -- " + e.getMessage());
- throw new StorageObjectFailure("Error in Database() constructor.", e);
+ logger.error("Error in Database() constructor with " + adapterName + " -- " + e.getMessage());
+ throw new DatabaseFailure("Error in Database() constructor.", e);
}
}
- /**
- * Liefert die Entity-Klasse zur?ck, in der eine Datenbankzeile gewrappt
- * wird. Wird die Entity-Klasse durch die erbende Klasse nicht ?berschrieben,
- * wird eine mir.entity.GenericEntity erzeugt.
- *
- * @return Class-Objekt der Entity
- */
- public java.lang.Class getEntityClass() {
- return theEntityClass;
+ public Class getEntityClass() {
+ return entityClass;
}
- /**
- * Liefert die Standardbeschr?nkung von select-Statements zur?ck, also
- * wieviel Datens?tze per Default selektiert werden.
- *
- * @return Standard-Anzahl der Datens?tze
- */
- public int getLimit() {
- return defaultLimit;
+ public Entity createNewEntity() throws DatabaseFailure {
+ try {
+ AbstractEntity result = (AbstractEntity) entityClass.newInstance();
+ result.setStorage(this);
+
+ return result;
+ }
+ catch (Throwable t) {
+ throw new DatabaseFailure(t);
+ }
}
- /**
- * Liefert den Namen des Primary-Keys zur?ck. Wird die Variable nicht von
- * der erbenden Klasse ?berschrieben, so ist der Wert <code>PKEY</code>
- * @return Name des Primary-Keys
- */
- public String getIdName() {
+ public String getIdFieldName() {
return primaryKeyField;
}
- /**
- * Liefert den Namen der Tabelle, auf das sich das Datenbankobjekt bezieht.
- *
- * @return Name der Tabelle
- */
public String getTableName() {
return mainTable;
}
/**
- * Returns the id that was most recently added to the database
+ * Returns a list of field names for this <code>Database</code>
*/
- private String getLatestInsertedId(Connection aConnection) throws SQLException {
- if (primaryKeySequence==null)
- primaryKeySequence = mainTable+"_id_seq";
-
- PreparedStatement statement = aConnection.prepareStatement("select currval('" + primaryKeySequence + "')");
+ public List getFieldNames() throws DatabaseFailure {
+ if (fieldNames == null) {
+ acquireMetaData();
+ }
- ResultSet rs = statement.executeQuery();
- rs.next();
- return rs.getString(1);
+ return fieldNames;
}
- /**
- * Liefert eine Liste der Felder der Tabelle
- * @return ArrayList mit Feldern
- */
- public List getFields() throws StorageObjectFailure {
- if (metadataFields == null) {
- get_meta_data();
- }
-
- return metadataFields;
+ public boolean hasField(String aFieldName) {
+ return getFieldNames().contains(aFieldName);
}
/**
* Gets value out of ResultSet according to type and converts to String
- * @param rs ResultSet.
+ *
+ * @param aResultSet ResultSet.
* @param aType a type from java.sql.Types.*
- * @param valueIndex index in ResultSet
+ * @param aFieldIndex index in ResultSet
* @return returns the value as String. If no conversion is possible
* /unsupported value/ is returned
*/
- private String getValueAsString(ResultSet rs, int valueIndex, int aType)
- throws StorageObjectFailure {
+ private String getValueAsString(ResultSet aResultSet, int aFieldIndex, int aType)
+ throws DatabaseFailure {
String outValue = null;
- if (rs != null) {
+ if (aResultSet != null) {
try {
switch (aType) {
case java.sql.Types.BIT:
- outValue = (rs.getBoolean(valueIndex) == true) ? "1" : "0";
+ outValue = (aResultSet.getBoolean(aFieldIndex) == true) ? "1" : "0";
break;
case java.sql.Types.TINYINT:
case java.sql.Types.BIGINT:
- int out = rs.getInt(valueIndex);
+ int out = aResultSet.getInt(aFieldIndex);
- if (!rs.wasNull()) {
+ if (!aResultSet.wasNull()) {
outValue = new Integer(out).toString();
}
break;
case java.sql.Types.NUMERIC:
+ long outl = aResultSet.getLong(aFieldIndex);
- /** todo Numeric can be float or double depending upon
- * metadata.getScale() / especially with oracle */
- long outl = rs.getLong(valueIndex);
-
- if (!rs.wasNull()) {
+ if (!aResultSet.wasNull()) {
outValue = new Long(outl).toString();
}
case java.sql.Types.REAL:
- float tempf = rs.getFloat(valueIndex);
+ float tempf = aResultSet.getFloat(aFieldIndex);
- if (!rs.wasNull()) {
+ if (!aResultSet.wasNull()) {
tempf *= 10;
tempf += 0.5;
case java.sql.Types.DOUBLE:
- double tempd = rs.getDouble(valueIndex);
+ double tempd = aResultSet.getDouble(aFieldIndex);
- if (!rs.wasNull()) {
+ if (!aResultSet.wasNull()) {
tempd *= 10;
tempd += 0.5;
case java.sql.Types.CHAR:
case java.sql.Types.VARCHAR:
case java.sql.Types.LONGVARCHAR:
- outValue = rs.getString(valueIndex);
+ outValue = aResultSet.getString(aFieldIndex);
break;
case java.sql.Types.LONGVARBINARY:
- outValue = rs.getString(valueIndex);
+ outValue = aResultSet.getString(aFieldIndex);
break;
// as a string is undefined and is only there for debugging
// according to the API. we can make it a string through formatting.
// -mh
- Timestamp timestamp = (rs.getTimestamp(valueIndex));
+ Timestamp timestamp = (aResultSet.getTimestamp(aFieldIndex));
- if (!rs.wasNull()) {
+ if (!aResultSet.wasNull()) {
java.util.Date date = new java.util.Date(timestamp.getTime());
-
- Calendar calendar = new GregorianCalendar();
- calendar.setTime(date);
- calendar.setTimeZone(timezone);
- outValue = internalDateFormat.format(date);
-
- int offset = calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET);
- String tzOffset = StringUtil.zeroPaddingNumber(Math.abs(offset) / _millisPerHour, 2, 2);
-
- if (offset<0)
- outValue = outValue + "-";
- else
- outValue = outValue + "+";
- outValue = outValue + tzOffset;
+ outValue = DatabaseHelper.convertDateToInternalRepresenation(date);
}
break;
default:
outValue = "<unsupported value>";
- logger.warn("Unsupported Datatype: at " + valueIndex + " (" + aType + ")");
+ logger.warn("Unsupported Datatype: at " + aFieldIndex + " (" + aType + ")");
}
- } catch (SQLException e) {
- throw new StorageObjectFailure("Could not get Value out of Resultset -- ",
+ }
+ catch (SQLException e) {
+ throw new DatabaseFailure("Could not get Value out of Resultset -- ",
e);
}
}
}
/**
- * select-Operator um einen Datensatz zu bekommen.
- * @param id Primaerschluessel des Datensatzes.
- * @return liefert EntityObject des gefundenen Datensatzes oder null.
+ * Return an entity specified by id, or <code>null</code> if no such
+ * entity exists.
*/
- public Entity selectById(String id) throws StorageObjectExc {
- if ((id == null) || id.equals("")) {
- throw new StorageObjectExc("Database.selectById: Missing id");
+ public Entity selectById(String anId) throws DatabaseExc {
+ if ((anId == null) || anId.equals("")) {
+ throw new DatabaseExc("Database.selectById: Missing id");
}
// ask object store for object
- if (StoreUtil.extendsStorableEntity(theEntityClass)) {
- String uniqueId = id;
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ String uniqueId = anId;
- if (theEntityClass.equals(StorableObjectEntity.class)) {
+ if (entityClass.equals(StorableObjectEntity.class)) {
uniqueId += ("@" + mainTable);
}
- StoreIdentifier search_sid = new StoreIdentifier(theEntityClass, uniqueId);
+ StoreIdentifier search_sid = new StoreIdentifier(entityClass, uniqueId);
logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString());
Entity hit = (Entity) o_store.use(search_sid);
}
}
- Statement stmt = null;
Connection con = obtainConnection();
Entity returnEntity = null;
+ PreparedStatement statement = null;
try {
ResultSet rs;
+ String query = "select * from " + mainTable + " where " + primaryKeyField + " = ?";
- /** todo better prepared statement */
- String selectSql =
- "select * from " + mainTable + " where " + primaryKeyField + "=" + id;
- stmt = con.createStatement();
- rs = executeSql(stmt, selectSql);
+ statement = con.prepareStatement(query);
+ statement.setString(1, anId);
- if (rs != null) {
- if (evaluatedMetaData == false) {
- evalMetaData(rs.getMetaData());
- }
+ logQueryBefore(query);
+
+ long startTime = System.currentTimeMillis();
+ try {
+ rs = statement.executeQuery();
+
+ logQueryAfter(query, (System.currentTimeMillis() - startTime));
+ }
+ catch (SQLException e) {
+ logQueryError(query, (System.currentTimeMillis() - startTime), e);
+ throw e;
+ }
+ if (rs != null) {
if (rs.next()) {
returnEntity = makeEntityFromResultSet(rs);
}
else {
- logger.warn("No data for id: " + id + " in table " + mainTable);
+ logger.warn("No data for id: " + anId + " in table " + mainTable);
}
rs.close();
}
else {
- logger.warn("No Data for Id " + id + " in Table " + mainTable);
+ logger.warn("No Data for Id " + anId + " in Table " + mainTable);
}
}
- catch (SQLException sqe) {
- throwSQLException(sqe, "selectById");
- return null;
- }
- catch (NumberFormatException e) {
- logger.error("ID is no number: " + id);
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
finally {
- freeConnection(con, stmt);
+ freeConnection(con, statement);
}
return returnEntity;
}
- /**
- * This method makes it possible to make selects across multiple tables
- *
- * @param mainTablePrefix prefix for the mainTable
- * @param extraTables a vector of tables for relational select
- * @param aWhereClause whereClause
- * @return EntityList of selected Objects
- * @throws StorageObjectFailure
- */
-
- public EntityList selectByWhereClauseWithExtraTables(String mainTablePrefix,
- List extraTables, String aWhereClause )
- throws StorageObjectFailure {
- return selectByWhereClause( mainTablePrefix, extraTables, aWhereClause, "", 0, defaultLimit);
+ public EntityList selectByWhereClauseWithExtraTables(String mainTablePrefix, List extraTables, String aWhereClause) throws DatabaseExc, DatabaseFailure {
+ return selectByWhereClause( mainTablePrefix, extraTables, aWhereClause, "", 0, DEFAULT_LIMIT);
}
- public EntityList selectByFieldValue(String aField, String aValue) throws StorageObjectFailure {
+ public EntityList selectByFieldValue(String aField, String aValue) throws DatabaseExc, DatabaseFailure {
return selectByFieldValue(aField, aValue, 0);
}
- public EntityList selectByFieldValue(String aField, String aValue, int offset) throws StorageObjectFailure {
+ public EntityList selectByFieldValue(String aField, String aValue, int offset) throws DatabaseExc, DatabaseFailure {
return selectByWhereClause(aField + "='" + JDBCStringRoutines.escapeStringLiteral(aValue)+"'", offset);
}
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
- * Also offset wird der erste Datensatz genommen.
- *
- * @param where where-Clause
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
- public EntityList selectByWhereClause(String where) throws StorageObjectFailure {
+ public EntityList selectByWhereClause(String where) throws DatabaseExc, DatabaseFailure {
return selectByWhereClause(where, 0);
}
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param whereClause where-Clause
- * @param offset ab welchem Datensatz.
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
- public EntityList selectByWhereClause(String whereClause, int offset) throws StorageObjectFailure {
+ public EntityList selectByWhereClause(String whereClause, int offset) throws DatabaseExc, DatabaseFailure {
return selectByWhereClause(whereClause, null, offset);
}
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
- * Also offset wird der erste Datensatz genommen.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param where where-Clause
- * @param order orderBy-Clause
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
- public EntityList selectByWhereClause(String where, String order) throws StorageObjectFailure {
- return selectByWhereClause(where, order, 0);
- }
-
- public EntityList selectByWhereClause(String mainTablePrefix, List extraTables, String where, String order) throws StorageObjectFailure {
- return selectByWhereClause(mainTablePrefix, extraTables, where, order, 0, defaultLimit);
+ public EntityList selectByWhereClause(String mainTablePrefix, List extraTables, String where, String order) throws DatabaseExc, DatabaseFailure {
+ return selectByWhereClause(mainTablePrefix, extraTables, where, order, 0, DEFAULT_LIMIT);
}
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param whereClause where-Clause
- * @param orderBy orderBy-Clause
- * @param offset ab welchem Datensatz
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
- public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws StorageObjectFailure {
- return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);
+ public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws DatabaseExc, DatabaseFailure {
+ return selectByWhereClause(whereClause, orderBy, offset, DEFAULT_LIMIT);
}
- /**
- * select-Operator returns EntityList with matching rows in Database.
- * @param aWhereClause where-Clause
- * @param anOrderByClause orderBy-Clause
- * @param offset ab welchem Datensatz
- * @param limit wieviele Datens?tze
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause,
- int offset, int limit) throws StorageObjectFailure {
+ int offset, int limit) throws DatabaseExc, DatabaseFailure {
return selectByWhereClause("", null, aWhereClause, anOrderByClause, offset, limit);
}
-
- /**
- * select-Operator returns EntityList with matching rows in Database.
- * @param aWhereClause where-Clause
- * @param anOrderByClause orderBy-Clause
- * @param offset ab welchem Datensatz
- * @param limit wieviele Datens?tze
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectFailure
- */
- public EntityList selectByWhereClause(String mainTablePrefix, List extraTables,
+ public EntityList selectByWhereClause(
+ String aMainTablePrefix, List anExtraTables,
String aWhereClause, String anOrderByClause,
- int offset, int limit) throws StorageObjectFailure {
-
- // TODO get rid of emtpy Strings in extraTables
- // make extraTables null, if single empty String in it
- // cause StringUtil.splitString puts in emptyString
- if (extraTables != null && ((String)extraTables.get(0)).trim().equals(""))
- {
- logger.debug("+++ made extraTables to null!");
- extraTables=null;
- }
+ int anOffset, int aLimit) throws DatabaseExc, DatabaseFailure {
- String useTable = mainTable;
- String selectStar = "*";
- if (mainTablePrefix!=null && mainTablePrefix.trim().length()>0) {
- useTable+=" "+mainTablePrefix;
- selectStar=mainTablePrefix.trim() + ".*";
- }
+ if (anExtraTables!=null && ((String) anExtraTables.get(0)).trim().equals("")){
+ anExtraTables=null;
+ }
// check o_store for entitylist
// only if no relational select
- if (extraTables==null) {
- if (StoreUtil.extendsStorableEntity(theEntityClass)) {
- StoreIdentifier searchSid = new StoreIdentifier(theEntityClass,
+ if (anExtraTables==null) {
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ StoreIdentifier searchSid = new StoreIdentifier(entityClass,
StoreContainerType.STOC_TYPE_ENTITYLIST,
StoreUtil.getEntityListUniqueIdentifierFor(mainTable,
- aWhereClause, anOrderByClause, offset, limit));
+ aWhereClause, anOrderByClause, anOffset, aLimit));
EntityList hit = (EntityList) o_store.use(searchSid);
if (hit != null) {
}
}
- // local
- EntityList theReturnList = null;
- Connection con = null;
- Statement stmt = null;
- ResultSet rs;
- int offsetCount = 0;
- int count = 0;
-
- // build sql-statement
+ RecordRetriever retriever = new RecordRetriever(mainTable, aMainTablePrefix);
- if ((aWhereClause != null) && (aWhereClause.trim().length() == 0)) {
- aWhereClause = null;
- }
+ EntityList result = null;
+ Connection connection = null;
- StringBuffer countSql =
- new StringBuffer("select count(*) from ").append(useTable);
- StringBuffer selectSql =
- new StringBuffer("select "+selectStar+" from ").append(useTable);
-
- // append extratables, if necessary
- if (extraTables!=null) {
- for (int i=0;i < extraTables.size();i++) {
- if (!extraTables.get(i).equals("")) {
- countSql.append( ", " + extraTables.get(i));
- selectSql.append( ", " + extraTables.get(i));
+ if (anExtraTables!=null) {
+ Iterator i = anExtraTables.iterator();
+ while (i.hasNext()) {
+ String table = (String) i.next();
+ if (!"".equals(table)) {
+ retriever.addExtraTable(table);
}
}
}
if (aWhereClause != null) {
- selectSql.append(" where ").append(aWhereClause);
- countSql.append(" where ").append(aWhereClause);
+ retriever.appendWhereClause(aWhereClause);
}
if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) {
- selectSql.append(" order by ").append(anOrderByClause);
+ retriever.appendOrderByClause(anOrderByClause);
}
- if ((limit > -1) && (offset > -1)) {
- selectSql.append(" LIMIT ").append(limit).append(" OFFSET ").append(offset);
+ if (anOffset>-1 && aLimit>-1) {
+ retriever.setLimit(aLimit+1);
+ retriever.setOffset(anOffset);
+ }
+
+ Iterator i = getFieldNames().iterator();
+ while (i.hasNext()) {
+ retriever.addField((String) i.next());
}
// execute sql
try {
- con = obtainConnection();
- stmt = con.createStatement();
-
- // selecting...
- rs = executeSql(stmt, selectSql.toString());
-
- if (rs != null) {
- if (!evaluatedMetaData) {
- evalMetaData(rs.getMetaData());
- }
-
- theReturnList = new EntityList();
- Entity theResultEntity;
- while (rs.next()) {
- theResultEntity = makeEntityFromResultSet(rs);
- theReturnList.add(theResultEntity);
- offsetCount++;
- }
- rs.close();
- }
-
- // making entitylist infos
- count = offsetCount;
-
- if (theReturnList != null) {
- // now we decide if we have to know an overall count...
- count = offsetCount;
+ connection = obtainConnection();
+ ResultSet resultSet = retriever.execute(connection);
- if ((limit > -1) && (offset > -1)) {
- if (offsetCount == limit) {
- rs = executeSql(stmt, countSql.toString());
+ boolean hasMore = false;
- if (rs != null) {
- if (rs.next()) {
- count = rs.getInt(1);
- }
+ if (resultSet != null) {
+ result = new EntityList();
+ Entity entity;
+ int position = 0;
- rs.close();
- }
- else {
- logger.error("Could not count: " + countSql);
- }
- }
+ while (((aLimit == -1) || (position<aLimit)) && resultSet.next()) {
+ entity = makeEntityFromResultSet(resultSet);
+ result.add(entity);
+ position++;
}
- theReturnList.setCount(count);
- theReturnList.setOffset(offset);
- theReturnList.setWhere(aWhereClause);
- theReturnList.setOrder(anOrderByClause);
- theReturnList.setStorage(this);
- theReturnList.setLimit(limit);
+ hasMore = resultSet.next();
+ resultSet.close();
+ }
- if (offset >= limit) {
- theReturnList.setPrevBatch(offset - limit);
- }
+ if (result != null) {
+ result.setOffset(anOffset);
+ result.setWhere(aWhereClause);
+ result.setOrder(anOrderByClause);
+ result.setStorage(this);
+ result.setLimit(aLimit);
- if ((offset + offsetCount) < count) {
- theReturnList.setNextBatch(offset + limit);
+ if (hasMore) {
+ result.setNextBatch(anOffset + aLimit);
}
- if (extraTables==null && StoreUtil.extendsStorableEntity(theEntityClass)) {
- StoreIdentifier sid = theReturnList.getStoreIdentifier();
+ if (anExtraTables==null && StoreUtil.extendsStorableEntity(entityClass)) {
+ StoreIdentifier sid = result.getStoreIdentifier();
logger.debug("CACHE (add): " + sid.toString());
o_store.add(sid);
}
}
}
- catch (SQLException sqe) {
- throwSQLException(sqe, "selectByWhereClause");
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
finally {
try {
- if (con != null) {
- freeConnection(con, stmt);
+ if (connection != null) {
+ freeConnection(connection);
}
} catch (Throwable t) {
}
}
- return theReturnList;
+ return result;
}
- /**
- * Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
- *
- * @param rs Das ResultSetObjekt.
- * @return Entity Die Entity.
- */
- private Entity makeEntityFromResultSet(ResultSet rs)
- throws StorageObjectFailure {
- Map theResultHash = new HashMap();
+ private Entity makeEntityFromResultSet(ResultSet rs) {
+ Map fields = new HashMap();
String theResult = null;
- int theType;
+ int type;
Entity returnEntity = null;
try {
- if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
StoreIdentifier searchSid = StorableObjectEntity.getStoreIdentifier(this,
- theEntityClass, rs);
+ entityClass, rs);
Entity hit = (Entity) o_store.use(searchSid);
if (hit != null) return hit;
}
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ type = fieldTypes[i];
- int size = metadataFields.size();
-
- for (int i = 0; i < size; i++) {
- // alle durchlaufen bis nix mehr da
- theType = metadataTypes[i];
-
- if (theType == java.sql.Types.LONGVARBINARY) {
+ if (type == java.sql.Types.LONGVARBINARY) {
InputStreamReader is =
(InputStreamReader) rs.getCharacterStream(i + 1);
is.close();
theResult = theResultString.toString();
- } else {
+ }
+ else {
theResult = null;
}
- } else {
- theResult = getValueAsString(rs, (i + 1), theType);
+ }
+ else {
+ theResult = getValueAsString(rs, (i + 1), type);
}
if (theResult != null) {
- theResultHash.put(metadataFields.get(i), theResult);
+ fields.put(getFieldNames().get(i), theResult);
}
}
- if (theEntityClass != null) {
- returnEntity = (Entity) theEntityClass.newInstance();
- returnEntity.setStorage(this);
- returnEntity.setFieldValues(theResultHash);
+ if (entityClass != null) {
+ returnEntity = createNewEntity();
+ returnEntity.setFieldValues(fields);
if (returnEntity instanceof StorableObject) {
logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + mainTable);
o_store.add(((StorableObject) returnEntity).getStoreIdentifier());
}
- } else {
- throwStorageObjectException("Internal Error: theEntityClass not set!");
+ }
+ else {
+ throw new DatabaseExc("Internal Error: entityClass not set!");
}
}
- catch (IllegalAccessException e) {
- throwStorageObjectException("No access! -- " + e.getMessage());
- }
- catch (IOException e) {
- throwStorageObjectException("IOException! -- " + e.getMessage());
- }
- catch (InstantiationException e) {
- throwStorageObjectException("No Instatiation! -- " + e.getMessage());
- }
- catch (SQLException sqe) {
- throwSQLException(sqe, "makeEntityFromResultSet");
-
- return null;
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
return returnEntity;
/**
* Inserts an entity into the database.
*
- * @param theEntity
- * @return der Wert des Primary-keys der eingef?gten Entity
+ * @param anEntity
+ * @return the value of the primary key of the inserted record
*/
- public String insert(Entity theEntity) throws StorageObjectFailure {
+ public String insert(Entity anEntity) throws DatabaseFailure {
invalidateStore();
+ RecordInserter inserter =
+ new RecordInserter(mainTable, getPrimaryKeySequence());
+
String returnId = null;
Connection con = null;
- PreparedStatement pstmt = null;
try {
- StringBuffer f = new StringBuffer();
- StringBuffer v = new StringBuffer();
- String aField;
- String aValue;
- boolean firstField = true;
+ String fieldName;
// make sql-string
- for (int i = 0; i < getFields().size(); i++) {
- aField = (String) getFields().get(i);
-
- if (!aField.equals(primaryKeyField)) {
- aValue = null;
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ fieldName = (String) getFieldNames().get(i);
+ if (!fieldName.equals(primaryKeyField)) {
// exceptions
- if (!theEntity.hasFieldValue(aField) && (
- aField.equals("webdb_create") ||
- aField.equals("webdb_lastchange"))) {
- aValue = "NOW()";
+ if (!anEntity.hasFieldValue(fieldName) && (
+ fieldName.equals("webdb_create") ||
+ fieldName.equals("webdb_lastchange"))) {
+ inserter.assignVerbatim(fieldName, "now()");
}
else {
- if (theEntity.hasFieldValue(aField)) {
- aValue =
- "'" +
- JDBCStringRoutines.escapeStringLiteral(theEntity.getFieldValue(aField)) + "'";
- }
- }
-
- // wenn Wert gegeben, dann einbauen
- if (aValue != null) {
- if (firstField == false) {
- f.append(",");
- v.append(",");
+ if (anEntity.hasFieldValue(fieldName)) {
+ inserter.assignString(fieldName, anEntity.getFieldValue(fieldName));
}
- else {
- firstField = false;
- }
-
- f.append(aField);
- v.append(aValue);
}
}
}
- // end for
-
- // insert into db
- StringBuffer sqlBuf =
- new StringBuffer("insert into ").append(mainTable).append("(").append(f)
- .append(") values (").append(v).append(")");
- String sql = sqlBuf.toString();
- logger.info("INSERT: " + sql);
con = obtainConnection();
- con.setAutoCommit(false);
- pstmt = con.prepareStatement(sql);
-
- int ret = pstmt.executeUpdate();
+ returnId = inserter.execute(con);
- if (ret == 0) {
- //insert failed
- return null;
- }
-
-// pstmt = con.prepareStatement("select currval('" + + "_id_seq')");
-
- returnId = getLatestInsertedId(con);
- theEntity.setId(returnId);
- }
- catch (SQLException sqe) {
- throwSQLException(sqe, "insert");
+ anEntity.setId(returnId);
}
finally {
- try {
- con.setAutoCommit(true);
- }
- catch (Exception e) {
- }
-
- freeConnection(con, pstmt);
+ freeConnection(con);
}
- /** todo store entity in o_store */
return returnId;
}
*
* @param theEntity
*/
- public void update(Entity theEntity) throws StorageObjectFailure {
- Connection con = null;
- PreparedStatement pstmt = null;
-
- /** todo this is stupid: why do we prepare statement, when we
- * throw it away afterwards. should be regular statement
- * update/insert could better be one routine called save()
- * that chooses to either insert or update depending if we
- * have a primary key in the entity. i don't know if we
- * still need the streamed input fields. // rk */
-
- /** todo extension: check if Entity did change, otherwise we don't need
- * the roundtrip to the database */
- /** invalidating corresponding entitylists in o_store*/
-
+ public void update(Entity theEntity) throws DatabaseFailure {
invalidateStore();
- String id = theEntity.getId();
- String aField;
- StringBuffer fv = new StringBuffer();
- boolean firstField = true;
+ RecordUpdater generator = new RecordUpdater(getTableName(), theEntity.getId());
// build sql statement
- for (int i = 0; i < getFields().size(); i++) {
- aField = (String) metadataFields.get(i);
-
- // only normal cases
- // todo if entity.hasFieldValue returns false, then the value should be stored as null
- if (!(aField.equals(primaryKeyField) ||
- aField.equals("webdb_create") ||
- aField.equals("webdb_lastchange"))) {
- if (theEntity.hasFieldValue(aField)) {
- if (firstField == false) {
- fv.append(", ");
- }
- else {
- firstField = false;
- }
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ String field = (String) getFieldNames().get(i);
- fv.append(aField).append("='").append(JDBCStringRoutines.escapeStringLiteral(theEntity.getFieldValue(aField))).append("'");
+ if (!(field.equals(primaryKeyField) ||
+ "webdb_create".equals(field) ||
+ "webdb_lastchange".equals(field) ||
+ binaryFields.contains(field))) {
- // fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getFieldValue(aField))).append("'");
+ if (theEntity.hasFieldValue(field)) {
+ generator.assignString(field, theEntity.getFieldValue(field));
}
}
}
- StringBuffer sql =
- new StringBuffer("update ").append(mainTable).append(" set ").append(fv);
-
// exceptions
- if (metadataFields.contains("webdb_lastchange")) {
- sql.append(",webdb_lastchange=NOW()");
+ if (hasField("webdb_lastchange")) {
+ generator.assignVerbatim("webdb_lastchange", "now()");
}
// special case: the webdb_create requires the field in yyyy-mm-dd HH:mm
// format so anything extra will be ignored. -mh
- if (metadataFields.contains("webdb_create") &&
+ if (hasField("webdb_create") &&
theEntity.hasFieldValue("webdb_create")) {
// minimum of 10 (yyyy-mm-dd)...
if (theEntity.getFieldValue("webdb_create").length() >= 10) {
// TimeStamp stuff
try {
java.util.Date d = userInputDateFormat.parse(dateString);
-// Timestamp tStamp = new Timestamp(d.getTime());
- sql.append(",webdb_create='" + JDBCStringRoutines.formatDate(d) + "'");
+ generator.assignDateTime("webdb_create", d);
}
catch (ParseException e) {
- throw new StorageObjectFailure(e);
+ throw new DatabaseFailure(e);
}
}
}
-
- sql.append(" where id=").append(id);
- logger.info("UPDATE: " + sql);
+ Connection connection = null;
try {
- con = obtainConnection();
- con.setAutoCommit(false);
- pstmt = con.prepareStatement(sql.toString());
-
- pstmt.executeUpdate();
- }
- catch (SQLException sqe) {
- throwSQLException(sqe, "update");
+ connection = obtainConnection();
+ generator.execute(connection);
}
finally {
- try {
- con.setAutoCommit(true);
- }
- catch (Exception e) {
- ;
- }
-
- freeConnection(con, pstmt);
+ freeConnection(connection);
}
}
-
- /*
- * delete-Operator
- * @param id des zu loeschenden Datensatzes
- * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
- */
- public boolean delete(String id) throws StorageObjectFailure {
+
+ private void invalidateObject(String anId) {
// ostore send notification
- if (StoreUtil.extendsStorableEntity(theEntityClass)) {
- String uniqueId = id;
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ String uniqueId = anId;
- if (theEntityClass.equals(StorableObjectEntity.class)) {
+ if (entityClass.equals(StorableObjectEntity.class)) {
uniqueId += ("@" + mainTable);
}
- logger.debug("CACHE: (del) " + id);
+ logger.debug("CACHE: (del) " + anId);
StoreIdentifier search_sid =
- new StoreIdentifier(theEntityClass,
+ new StoreIdentifier(entityClass,
StoreContainerType.STOC_TYPE_ENTITY, uniqueId);
o_store.invalidate(search_sid);
}
+ }
- /** todo could be prepared Statement */
- Statement stmt = null;
- Connection con = null;
- int res = 0;
- String sql =
- "delete from " + mainTable + " where " + primaryKeyField + "='" + id + "'";
+ /*
+ * delete-Operator
+ * @param id des zu loeschenden Datensatzes
+ * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
+ */
+ public boolean delete(String id) throws DatabaseFailure {
+ invalidateObject(id);
+
+ int resultCode = 0;
+ Connection connection = obtainConnection();
+ PreparedStatement statement = null;
- logger.debug("DELETE " + sql);
try {
- con = obtainConnection();
- stmt = con.createStatement();
- res = stmt.executeUpdate(sql);
+ statement = connection.prepareStatement("delete from " + mainTable + " where " + primaryKeyField + "=?");
+ statement.setInt(1, Integer.parseInt(id));
+ logQueryBefore("delete from " + mainTable + " where " + primaryKeyField + "=" + id + "");
+ resultCode = statement.executeUpdate();
}
- catch (SQLException sqe) {
- throwSQLException(sqe, "delete");
+ catch (SQLException e) {
+ logger.warn("Can't delete record", e);
}
finally {
- freeConnection(con, stmt);
+ freeConnection(connection, statement);
}
invalidateStore();
- return (res > 0) ? true : false;
+ return (resultCode > 0) ? true : false;
}
/**
* Deletes entities based on a where clause
- *
- * @param aWhereClause
- * @return
- * @throws StorageObjectFailure
*/
- public int deleteByWhereClause(String aWhereClause) throws StorageObjectFailure {
+ public int deleteByWhereClause(String aWhereClause) throws DatabaseFailure {
invalidateStore();
Statement stmt = null;
stmt = con.createStatement();
res = stmt.executeUpdate(sql);
}
- catch (SQLException sqe) {
- throwSQLException(sqe, "delete");
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
finally {
freeConnection(con, stmt);
return false;
}
- /**
- * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
- * @param stmt Statemnt
- * @param sql Sql-String
- */
public ResultSet executeSql(Statement stmt, String sql)
- throws StorageObjectFailure, SQLException {
+ throws DatabaseFailure, SQLException {
ResultSet rs;
+ logQueryBefore(sql);
long startTime = System.currentTimeMillis();
-
try {
rs = stmt.executeQuery(sql);
- logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ logQueryAfter(sql, (System.currentTimeMillis() - startTime));
}
catch (SQLException e) {
- logger.error(e.getMessage() +"\n" + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ logQueryError(sql, (System.currentTimeMillis() - startTime), e);
throw e;
}
return rs;
}
- private Map processRow(ResultSet aResultSet) throws StorageObjectFailure {
+ private Map processRow(ResultSet aResultSet) throws DatabaseFailure {
try {
Map result = new HashMap();
ResultSetMetaData metaData = aResultSet.getMetaData();
return result;
}
catch (Throwable e) {
- throw new StorageObjectFailure(e);
+ throw new DatabaseFailure(e);
}
}
- public List executeFreeSql(String sql, int aLimit) throws StorageObjectFailure, StorageObjectExc {
+ /**
+ * Executes 1 sql statement and returns the results as a <code>List</code> of
+ * <code>Map</code>s
+ */
+ public List executeFreeSql(String sql, int aLimit) throws DatabaseFailure, DatabaseExc {
Connection connection = null;
Statement statement = null;
try {
return result;
}
catch (Throwable e) {
- throw new StorageObjectFailure(e);
+ throw new DatabaseFailure(e);
}
finally {
if (connection!=null) {
freeConnection(connection, statement);
}
}
- };
+ }
- public Map executeFreeSingleRowSql(String anSqlStatement) throws StorageObjectFailure, StorageObjectExc {
+ /**
+ * Executes 1 sql statement and returns the first result row as a <code>Map</code>s
+ * (<code>null</code> if there wasn't any row)
+ */
+ public Map executeFreeSingleRowSql(String anSqlStatement) throws DatabaseFailure, DatabaseExc {
try {
List resultList = executeFreeSql(anSqlStatement, 1);
try {
if (resultList.size()>0)
return (Map) resultList.get(0);
- else
- return null;
+ return null;
}
finally {
}
}
catch (Throwable t) {
- throw new StorageObjectFailure(t);
+ throw new DatabaseFailure(t);
}
- };
+ }
- public String executeFreeSingleValueSql(String sql) throws StorageObjectFailure, StorageObjectExc {
+ /**
+ * Executes 1 sql statement and returns the first column of the first result row as a <code>String</code>s
+ * (<code>null</code> if there wasn't any row)
+ */
+ public String executeFreeSingleValueSql(String sql) throws DatabaseFailure, DatabaseExc {
Map row = executeFreeSingleRowSql(sql);
if (row==null)
Iterator i = row.values().iterator();
if (i.hasNext())
return (String) i.next();
- else
- return null;
- };
+ return null;
+ }
- public int getSize(String where) throws SQLException, StorageObjectFailure {
+ public int getSize(String where) throws SQLException, DatabaseFailure {
return getSize("", null, where);
}
/**
* returns the number of rows in the table
*/
- public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, StorageObjectFailure {
-
- long startTime = System.currentTimeMillis();
+ public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, DatabaseFailure {
String useTable = mainTable;
if (mainTablePrefix!=null && mainTablePrefix.trim().length()>0) {
- useTable+=" "+mainTablePrefix;
+ useTable+=" "+mainTablePrefix;
}
StringBuffer countSql =
new StringBuffer("select count(*) from ").append(useTable);
Connection con = null;
Statement stmt = null;
int result = 0;
+ logQueryBefore(countSql.toString());
+ long startTime = System.currentTimeMillis();
try {
con = obtainConnection();
finally {
freeConnection(con, stmt);
}
- logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + countSql);
+ logQueryAfter(countSql.toString(), (System.currentTimeMillis() - startTime));
return result;
}
public int executeUpdate(Statement stmt, String sql)
- throws StorageObjectFailure, SQLException {
+ throws DatabaseFailure, SQLException {
int rs;
+
+ logQueryBefore(sql);
long startTime = System.currentTimeMillis();
try {
rs = stmt.executeUpdate(sql);
- logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ logQueryAfter(sql, (System.currentTimeMillis() - startTime));
}
catch (SQLException e) {
- logger.error("Failed: " + (System.currentTimeMillis() - startTime) + "ms. for: " + sql);
+ logQueryError(sql, (System.currentTimeMillis() - startTime), e);
throw e;
}
}
public int executeUpdate(String sql)
- throws StorageObjectFailure, SQLException {
+ throws DatabaseFailure, SQLException {
int result = -1;
- long startTime = System.currentTimeMillis();
Connection con = null;
PreparedStatement pstmt = null;
+ logQueryBefore(sql);
+ long startTime = System.currentTimeMillis();
try {
con = obtainConnection();
pstmt = con.prepareStatement(sql);
result = pstmt.executeUpdate();
+ logQueryAfter(sql, System.currentTimeMillis() - startTime);
}
catch (Throwable e) {
- logger.error("Database.executeUpdate(" + sql + "): " + e.getMessage());
- throw new StorageObjectFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e);
+ logQueryError(sql, System.currentTimeMillis() - startTime, e);
+ throw new DatabaseFailure("Database.executeUpdate(" + sql + "): " + e.getMessage(), e);
}
finally {
freeConnection(con, pstmt);
}
-
- logger.info((System.currentTimeMillis() - startTime) + "ms. for: " + sql);
return result;
}
/**
- * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend
- * @param md ResultSetMetaData
+ * Processes the metadata for the table this Database object is responsible for.
*/
- private void evalMetaData(ResultSetMetaData md) throws StorageObjectFailure {
- this.evaluatedMetaData = true;
- this.metadataFields = new ArrayList();
- this.metadataLabels = new ArrayList();
- this.metadataNotNullFields = new ArrayList();
+ private void processMetaData(ResultSetMetaData aMetaData) throws DatabaseFailure {
+ fieldNames = new ArrayList();
+ fieldNameToType = new HashMap();
try {
- int numFields = md.getColumnCount();
- this.metadataTypes = new int[numFields];
-
- String aField;
- int aType;
+ int numFields = aMetaData.getColumnCount();
+ fieldTypes = new int[numFields];
for (int i = 1; i <= numFields; i++) {
- aField = md.getColumnName(i);
- metadataFields.add(aField);
- metadataLabels.add(md.getColumnLabel(i));
- aType = md.getColumnType(i);
- metadataTypes[i - 1] = aType;
-
- if (aField.equals(primaryKeyField)) {
- }
-
- if (md.isNullable(i) == ResultSetMetaData.columnNullable) {
- metadataNotNullFields.add(aField);
- }
+ fieldNames.add(aMetaData.getColumnName(i));
+ fieldTypes[i - 1] = aMetaData.getColumnType(i);
+ fieldNameToType.put(aMetaData.getColumnName(i), new Integer(aMetaData.getColumnType(i)));
}
}
- catch (SQLException e) {
- throwSQLException(e, "evalMetaData");
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
}
/**
- * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,
- * um die alle Columns und Typen einer Tabelle zu ermitteln.
+ * Retrieves metadata from the table this Database object represents
*/
- private void get_meta_data() throws StorageObjectFailure {
- Connection con = null;
- PreparedStatement pstmt = null;
+ private void acquireMetaData() throws DatabaseFailure {
+ Connection connection = null;
+ PreparedStatement statement = null;
String sql = "select * from " + mainTable + " where 0=1";
try {
- con = obtainConnection();
- pstmt = con.prepareStatement(sql);
+ connection = obtainConnection();
+ statement = connection.prepareStatement(sql);
logger.debug("METADATA: " + sql);
- ResultSet rs = pstmt.executeQuery();
- evalMetaData(rs.getMetaData());
- rs.close();
+ ResultSet resultSet = statement.executeQuery();
+ try {
+ processMetaData(resultSet.getMetaData());
+ }
+ finally {
+ resultSet.close();
+ }
}
- catch (SQLException e) {
- throwSQLException(e, "get_meta_data");
+ catch (Throwable e) {
+ throw new DatabaseFailure(e);
}
finally {
- freeConnection(con, pstmt);
+ freeConnection(connection, statement);
}
}
- public Connection obtainConnection() throws StorageObjectFailure {
+ public Connection obtainConnection() throws DatabaseFailure {
try {
return MirGlobal.getDatabaseEngine().obtainConnection();
}
catch (Exception e) {
- throw new StorageObjectFailure(e);
+ throw new DatabaseFailure(e);
}
}
- public void freeConnection(Connection aConnection, Statement aStatement) throws StorageObjectFailure {
- try {
- aStatement.close();
- }
- catch (Throwable t) {
- logger.warn("Can't close statemnet: " + t.toString());
- }
-
+ public void freeConnection(Connection aConnection) throws DatabaseFailure {
try {
MirGlobal.getDatabaseEngine().releaseConnection(aConnection);
}
}
}
- /**
- * Wertet SQLException aus und wirft dannach eine StorageObjectException
- * @param sqe SQLException
- * @param aFunction Funktonsname, in der die SQLException geworfen wurde
- */
- protected void throwSQLException(SQLException sqe, String aFunction) throws StorageObjectFailure {
- String state = "";
- String message = "";
- int vendor = 0;
-
- if (sqe != null) {
- state = sqe.getSQLState();
- message = sqe.getMessage();
- vendor = sqe.getErrorCode();
+ public void freeConnection(Connection aConnection, Statement aStatement) throws DatabaseFailure {
+ try {
+ aStatement.close();
+ }
+ catch (Throwable t) {
+ logger.warn("Can't close statement", t);
}
- String information =
- "SQL Error: " +
- "state= " + state +
- ", vendor= " + vendor +
- ", message=" + message +
- ", function= " + aFunction;
-
- logger.error(information);
-
- throw new StorageObjectFailure(information, sqe);
+ freeConnection(aConnection);
}
protected void _throwStorageObjectException(Exception e, String aFunction)
- throws StorageObjectFailure {
+ throws DatabaseFailure {
if (e != null) {
logger.error(e.getMessage() + aFunction);
- throw new StorageObjectFailure(aFunction, e);
+ throw new DatabaseFailure(aFunction, e);
}
}
- /**
- * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach
- * eine StorageObjectException
- * @param aMessage Nachricht mit dem Fehler
- * @exception StorageObjectFailure
- */
- void throwStorageObjectException(String aMessage) throws StorageObjectFailure {
- logger.error(aMessage);
- throw new StorageObjectFailure(aMessage, null);
- }
/**
* Invalidates any cached entity list
*/
private void invalidateStore() {
- // invalidating all EntityLists corresponding with theEntityClass
- if (StoreUtil.extendsStorableEntity(theEntityClass)) {
+ // invalidating all EntityLists corresponding with entityClass
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
StoreContainerType stoc_type =
- StoreContainerType.valueOf(theEntityClass, StoreContainerType.STOC_TYPE_ENTITYLIST);
+ StoreContainerType.valueOf(entityClass, StoreContainerType.STOC_TYPE_ENTITYLIST);
o_store.invalidate(stoc_type);
}
}
/**
* Retrieves a binary value
*/
- public InputStream getBinaryField(String aQuery) throws StorageObjectFailure, SQLException {
+ public byte[] getBinaryField(String aQuery) throws DatabaseFailure, SQLException {
Connection connection=null;
Statement statement=null;
InputStream inputStream;
- InputStream imageInputStream = null;
try {
connection = obtainConnection();
if(resultSet!=null) {
if (resultSet.next()) {
- inputStream = resultSet.getBlob(1).getBinaryStream();
- imageInputStream = new BinaryFieldInputStream(inputStream, connection, statement);
+ if (resultSet.getMetaData().getColumnType(1) == java.sql.Types.BINARY) {
+ return resultSet.getBytes(1);
+ }
+ else {
+ inputStream = resultSet.getBlob(1).getBinaryStream();
+ ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+ StreamCopier.copy(inputStream, outputStream);
+ return outputStream.toByteArray();
+ }
}
resultSet.close();
}
}
finally {
+ try {
+ connection.setAutoCommit(true);
+ }
+ catch (Throwable e) {
+ logger.error("EntityImages.getImage resetting transaction mode failed: " + e.toString());
+ e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
+ }
+
+ try {
+ freeConnection(connection, statement);
+ }
+ catch (Throwable e) {
+ logger.error("EntityImages.getImage freeing connection failed: " +e.toString());
+ }
+
}
}
catch (Throwable t) {
logger.error("EntityImages.getImage failed: " + t.toString());
t.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
- try {
- connection.setAutoCommit(true);
- }
- catch (Throwable e) {
- logger.error("EntityImages.getImage resetting transaction mode failed: " + e.toString());
- e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
- }
-
- try {
- freeConnection(connection, statement);
- }
- catch (Throwable e) {
- logger.error("EntityImages.getImage freeing connection failed: " +e.toString());
- }
-
- throw new StorageObjectFailure(t);
+ throw new DatabaseFailure(t);
}
- return imageInputStream;
+ return new byte[0];
}
/**
- * Sets a binary value. The query is supposed to contain 1 ? denoting where the
- * binary value should be inserted.
- *
- * e.g. <code>update images set image_data = ? where id= 22</code>
+ * Sets a binary value for a particular field in a record specified by its identifier
*/
- public void setBinaryField(String aQuery, byte aData[]) throws StorageObjectFailure, SQLException {
+ public void setBinaryField(String aFieldName, String anObjectId, byte aData[]) throws DatabaseFailure, SQLException {
PreparedStatement statement = null;
Connection connection = obtainConnection();
+
try {
connection.setAutoCommit(false);
try {
- statement = connection.prepareStatement(aQuery);
- statement.setBinaryStream(1, new ByteArrayInputStream(aData), aData.length);
- statement.execute();
- connection.commit();
+ // are we using bytea ?
+ if (getFieldType(aFieldName) == java.sql.Types.BINARY) {
+ statement = connection.prepareStatement(
+ "update " + mainTable + " set " + aFieldName + " = ? where " + getIdFieldName() + "=" + Integer.parseInt(anObjectId));
+ statement.setBytes(1, aData);
+ statement.execute();
+ connection.commit();
+ }
+ // or the old oid's
+ else {
+ PGConnection postgresqlConnection = (org.postgresql.PGConnection) ((DelegatingConnection) connection).getDelegate();
+ LargeObjectManager lobManager = postgresqlConnection.getLargeObjectAPI();
+ int oid = lobManager.create(LargeObjectManager.READ | LargeObjectManager.WRITE);
+ LargeObject obj = lobManager.open(oid, LargeObjectManager.WRITE); // Now open the file File file =
+ obj.write(aData);
+ obj.close();
+ statement = connection.prepareStatement(
+ "update " + mainTable + " set " + aFieldName + " = ? where " + getIdFieldName() + "=" + Integer.parseInt(anObjectId));
+ statement.setInt(1, oid);
+ statement.execute();
+ connection.commit();
+ }
}
finally {
connection.setAutoCommit(true);
}
/**
- * a small wrapper class that allows us to store the DB connection resources
- * that the BlobInputStream is using and free them upon closing of the stream
+ * Can be overridden to specify a primary key sequence name not named according to
+ * the convention (tablename _id_seq)
*/
- private class BinaryFieldInputStream extends InputStream {
- InputStream inputStream;
- Connection connection;
- Statement statement;
+ protected String getPrimaryKeySequence() {
+ return mainTable+"_id_seq";
+ }
- public BinaryFieldInputStream(InputStream aBlobInputStream, Connection aConnection, Statement aStatement ) {
- inputStream = aBlobInputStream;
- connection = aConnection;
- statement = aStatement;
- }
+ /**
+ * Can be called by subclasses to specify fields that are binary, and that shouldn't
+ * be updated outside of {@link #setBinaryField}
+ *
+ * @param aBinaryField The field name of the binary field
+ */
+ protected void markBinaryField(String aBinaryField) {
+ binaryFields.add(aBinaryField);
+ }
- public void close () throws IOException {
- inputStream.close();
- try {
- connection.setAutoCommit(true);
- freeConnection(connection, statement);
- }
- catch (Exception e) {
- throw new IOException("close(): "+e.toString());
- }
- }
+ private void logQueryBefore(String aQuery) {
+ logger.debug("about to perform QUERY " + aQuery);
+// (new Throwable()).printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
+ }
- public int read() throws IOException {
- return inputStream.read();
+ private void logQueryAfter(String aQuery, long aTime) {
+ logger.info("QUERY " + aQuery + " took " + aTime + "ms.");
+ }
+
+ private void logQueryError(String aQuery, long aTime, Throwable anException) {
+ logger.error("QUERY " + aQuery + " took " + aTime + "ms, but threw exception " + anException.toString());
+ }
+
+ private int getFieldType(String aFieldName) {
+ if (fieldNameToType == null) {
+ acquireMetaData();
}
+
+ return ((Integer) fieldNameToType.get(aFieldName)).intValue();
}
}
projects / mir.git / blobdiff