package mircoders.entity;
-import java.io.File;
-import java.io.IOException;
+import java.io.ByteArrayOutputStream;
import java.io.InputStream;
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
import java.sql.SQLException;
-import java.sql.Statement;
-import mir.config.MirPropertiesConfiguration;
import mir.log.LoggerWrapper;
-import mir.misc.FileUtil;
import mir.storage.StorageObject;
import mir.storage.StorageObjectFailure;
+import mir.util.StreamCopier;
import mircoders.media.ImageProcessor;
-import org.postgresql.largeobject.BlobInputStream;
-import org.postgresql.largeobject.LargeObject;
-import org.postgresql.largeobject.LargeObjectManager;
-
/**
*
* @author RK, mh, mir-coders
- * @version $Id: EntityImages.java,v 1.21.2.4 2004/01/18 17:30:58 zapata Exp $
+ * @version $Id: EntityImages.java,v 1.21.2.5 2004/11/21 22:07:13 zapata Exp $
*/
setStorage(theStorage);
}
- //
- // methods
-
-
+ /**
+ * Retrieves the image data
+ */
public InputStream getImage() throws StorageObjectFailure {
- logger.debug("EntityImages.getimage started");
- java.sql.Connection con=null;
- Statement stmt=null;
- BlobInputStream in;
- InputStream img_in = null;
-
try {
- con = storageObject.getPooledCon();
- con.setAutoCommit(false);
- LargeObjectManager lom;
- java.sql.Connection jCon;
- stmt = con.createStatement();
- ResultSet rs = storageObject.executeSql(stmt,
- "select image_data from images where id="+getId());
- jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
- .getNativeConnection();
- lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
- if(rs!=null) {
- if (rs.next()) {
- LargeObject lob = lom.open(rs.getInt(1));
- in = (BlobInputStream)lob.getInputStream();
- img_in = new ImageInputStream(in, con, stmt);
- }
- rs.close();
- }
+ return storageObject.getBinaryField("select image_data from images where id="+getId());
}
- catch (Throwable t) {
- logger.error("EntityImages.getImage failed: " + t.toString());
- t.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
-
- try {
- con.setAutoCommit(true);
- }
- catch (Throwable e) {
- logger.error("EntityImages.getImage resetting transaction mode failed: " + e.toString());
- e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
- }
-
- try {
- storageObject.freeConnection(con, stmt);
- }
- catch (Throwable e) {
- logger.error("EntityImages.getImage freeing connection failed: " +e.toString());
- }
-
- throw new StorageObjectFailure(t);
+ catch (SQLException e) {
+ throw new StorageObjectFailure(e);
}
-
- return img_in;
}
- public void setImage(InputStream in, String type) throws StorageObjectFailure {
- // todo: failures should be treated in a better way: exception -> rollback instead
+ /**
+ * Processes and saves image data
+ */
+ public void setImage(InputStream anInputStream, String type) throws StorageObjectFailure {
+ // todo: failures should be treated anInputStream a better way: exception -> rollback instead
// of commit
- if (in != null) {
-
- Connection con = null;
- PreparedStatement pstmt = null;
- File f = null;
+ if (anInputStream != null) {
try {
- logger.debug("EntityImages.settimage :: making internal representation of image");
+ ByteArrayOutputStream inputData = new ByteArrayOutputStream();
+ StreamCopier.copy(anInputStream, inputData);
- f = File.createTempFile("mir", ".tmp",
- new File(MirPropertiesConfiguration.instance().getString("TempDir")));
- FileUtil.write(f, in);
- ImageProcessor processor = new ImageProcessor(f);
-
- con = storageObject.getPooledCon();
- con.setAutoCommit(false);
- LargeObjectManager lom;
- java.sql.Connection connection;
- connection = ((com.codestudio.sql.PoolManConnectionHandle)con).getNativeConnection();
+ ImageProcessor processor = new ImageProcessor(inputData.toByteArray());
+ processor.descaleImage(maxImageSize, minDescaleRatio, minDescaleReduction);
- lom = ((org.postgresql.Connection) connection).getLargeObjectAPI();
+ ByteArrayOutputStream imageData = new ByteArrayOutputStream();
+ processor.writeScaledData(imageData, type);
+ storageObject.setBinaryField("update images set image_data = ? where id = "+getId(), imageData.toByteArray());
- int oidImage = lom.create();
- LargeObject lobImage = lom.open(oidImage);
- processor.descaleImage(maxImageSize, minDescaleRatio, minDescaleReduction);
- processor.writeScaledData(lobImage.getOutputStream(), type);
- lobImage.close();
setFieldValue("img_height", new Integer(processor.getScaledHeight()).toString());
setFieldValue("img_width", new Integer(processor.getScaledWidth()).toString());
- int oidIcon = lom.create();
- LargeObject lobIcon = lom.open(oidIcon);
+ imageData.reset();
processor.descaleImage(maxIconSize, minDescaleRatio, minDescaleReduction);
- processor.writeScaledData(lobIcon.getOutputStream(), type);
- lobIcon.close();
+ processor.writeScaledData(imageData, type);
+ storageObject.setBinaryField("update images set icon_data = ? where id = "+getId(), imageData.toByteArray());
setFieldValue("icon_height", new Integer(processor.getScaledHeight()).toString());
setFieldValue("icon_width", new Integer(processor.getScaledWidth()).toString());
- setFieldValue("image_data", new Integer(oidImage).toString());
- setFieldValue("icon_data", new Integer(oidIcon).toString());
update();
}
catch (Exception e) {
throw new StorageObjectFailure(e);
}
- finally {
- try {
- if (con!=null)
- con.setAutoCommit(true);
- // get rid of the temp. file
- }
- catch (Throwable e) {
- logger.error("EntityImages.setImage: unable to reset the connection to auto-commit:" + e.toString());
- }
- try {
- f.delete();
- }
- catch (Throwable t) {
- logger.error("EntityImages.setImage: unable to delete the temporary file:" + t.toString());
- }
-
- try {
- if (con!=null)
- storageObject.freeConnection(con,pstmt);
- }
- catch (Throwable t) {
- logger.error("EntityImages.setImage: unable to free the connection:" + t.toString());
- }
- }
}
}
* It will also take care of closing the OutputStream.
*/
public InputStream getIcon() throws StorageObjectFailure {
- Connection con=null;
- Statement stmt=null;
- BlobInputStream in=null;
- ImageInputStream img_in=null;
-
try {
- con = storageObject.getPooledCon();
- con.setAutoCommit(false);
- LargeObjectManager lom;
- java.sql.Connection jCon;
- stmt = con.createStatement();
- ResultSet rs = storageObject.executeSql(stmt, "select icon_data from images where id="+getId());
- jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
- .getNativeConnection();
- lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
- if(rs!=null) {
- if (rs.next()) {
- LargeObject lob = lom.open(rs.getInt(1));
- in = (BlobInputStream)lob.getInputStream();
- img_in = new ImageInputStream( in, con ,stmt);
- //img_data = rs.getBytes(1);
- }
- rs.close();
- }
+ return storageObject.getBinaryField("select icon_data from images where id="+getId());
}
- catch (Throwable t) {
- logger.error("EntityImages.getIcon failed: "+t.toString());
- t.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
-
- try {
- con.setAutoCommit(true);
- }
- catch (SQLException e) {
- logger.error("EntityImages.getIcon resetting transaction mode failed: " + e.toString());
- e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
- }
- try {
- storageObject.freeConnection(con, stmt);
- }
- catch (Throwable e) {
- logger.error("EntityImages -- freeing connection failed: " + e.getMessage());
- }
-
- throw new StorageObjectFailure(t);
- }
-
- return img_in;
- }
-
- /**
- * 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
- */
- private class ImageInputStream extends InputStream {
-
- InputStream _in;
- Connection _con;
- Statement _stmt;
-
- public ImageInputStream(BlobInputStream in, Connection con,
- Statement stmt ) {
- _in = in;
- _con = con;
- _stmt = stmt;
- }
-
- public void close () throws IOException {
- _in.close();
- try {
- _con.setAutoCommit(true);
- storageObject.freeConnection(_con,_stmt);
- }
- catch (Exception e) {
- throw new IOException("close(): "+e.toString());
- }
- }
-
- public int read() throws IOException {
- return _in.read();
+ catch (SQLException e) {
+ throw new StorageObjectFailure(e);
}
}
}
projects / mir.git / blobdiff