starting to test object store

[mir.git] / source / mir / storage / store / StoreContainer.java

diff --git a/source/mir/storage/store/StoreContainer.java b/source/mir/storage/store/StoreContainer.java
index 897cf78..4713530 100755 (executable)
--- a/source/mir/storage/store/StoreContainer.java
+++ b/source/mir/storage/store/StoreContainer.java
@@ -20,95 +20,109 @@ import mir.misc.Logfile;
 
 public class StoreContainer {
 
-  private final static int    DEFAULT_SIZE=10;
-  private static Logfile      storeLog;
-  private static int          uniqueCounter=10000;
+       private final static int    DEFAULT_SIZE=10;
+       private static Logfile      storeLog;
+       private static int          uniqueCounter=10000;
 
-  private LinkedList          container;
-  private StoreContainerType  stocType;
-  private int                 maxSize=DEFAULT_SIZE;
-  private int                 uniqueId;
+       private LinkedList          container;
+       private StoreContainerType  stocType;
+       private int                 maxSize=DEFAULT_SIZE;
+       private int                 uniqueId;
 
-  private StoreContainer() {};
+       private StoreContainer() {};
 
-  public StoreContainer(StoreContainerType stoc_type) {
-    this.uniqueId=++uniqueCounter;
-    this.stocType=stoc_type;
-    this.container=new LinkedList();
-  }
+       public StoreContainer(StoreContainerType stoc_type) {
+               this.uniqueId=++uniqueCounter;
+               this.stocType=stoc_type;
+               this.container=new LinkedList();
+       }
 
-  public StoreContainer(StoreContainerType stoc_type, int maxSize) {
-    this();
-    this.maxSize=maxSize;
-  }
+       public StoreContainer(StoreContainerType stoc_type, int maxSize) {
+               this();
+               this.maxSize=maxSize;
+       }
 
-  public StorableObject use(StoreIdentifier sid) {
-    // find sid in LinkedList or die
-    // move sid to head of linked list
-    // return reference on object
-    return null;
-  }
+       public StorableObject use(StoreIdentifier sid) {
+               // find sid in LinkedList or die
+               // move sid to head of linked list
+               // return reference on object
+               return null;
+       }
 
-  public boolean has(StoreIdentifier sid) {
-    return true; // yes yes
-  }
+       public boolean has(StoreIdentifier sid) {
+               return true; // yes yes
+       }
 
-  public void add(StoreIdentifier sid) {
-    // add to head of linkedlist, if size is exeded throw away tail until
-    // size ok.
-  }
+       public void add(StoreIdentifier sid) {
+               if ( sid != null && sid.hasReference() ) {
+                       //if ( has(sid) )
+                       //      moveToHead(sid);
+                       //else
+                               container.addFirst(sid);
+               }
+               // add to head of linkedlist, if size is exceded throw away tail until
+               // size ok.
+       }
 
-  /**
-   *  Method:       invalidate(StorableObject sto)
-   *  Description:  finds @see StorableObject, propagates invalidation to
-   *                @see StoreIdentifier and removes StoreIdentifier from
-   *                list.
-   */
-  public void invalidate(StorableObject sto) {
-    if (sto!=null) {
-      StoreIdentifier sid = sto.getStoreIdentifier();
-      if (sid!=null) {
-        if ( container.contains(sid) ) {
-          sid.invalidate();
-          container.remove(sid);
-        }
-      }
-    }
-  }
+       /**
+        *  Method:       invalidate(StorableObject sto)
+        *  Description:  finds @see StorableObject, propagates invalidation to
+        *                @see StoreIdentifier and removes StoreIdentifier from
+        *                list.
+        */
+       public void invalidate(StorableObject sto) {
+               if (sto!=null) {
+                       StoreIdentifier sid = sto.getStoreIdentifier();
+                       if (sid!=null) {
+                               if ( container.contains(sid) ) {
+                                       sid.invalidate();
+                                       container.remove(sid);
+                               }
+                       }
+               }
+       }
 
-  /**
-   *  Method:       setSize
-   *  Description:  readjusts StoreContainer size to value.
-   *
-   */
-  public void setSize(int size) {
-    if (size <0) return;
-    if ( size<maxSize && size > container.size() ) {
-      // shrink
-      while (size > container.size() ) {
-        StoreIdentifier sid = (StoreIdentifier)container.getLast();
-        sid.release();
-        container.remove(sid);
-      }
-    }
-    this.maxSize=size;
-  }
+       /**
+        *  Method:       setSize
+        *  Description:  readjusts StoreContainer size to value.
+        *
+        */
+       public void setSize(int size) {
+               if (size <0) return;
+    shrinkToSize(size);
+               this.maxSize=size;
+       }
 
-  /**
-   *  Method:       toString()
-   *  Description:  gives out statistical Information, viewable via
-   *                @see ServletStoreInfo.
-   *
-   *  @return       String
-   */
-  public String toString() {
-    StringBuffer sb = new StringBuffer("StoreContainer id: ");
-    sb.append(uniqueId).append(" for ");
-    sb.append(stocType.toString()).append("\nCurrent size: ");
-    sb.append(container.size()).append("\nMaximum size:");
-    sb.append(maxSize).append("\n");
-    /** @todo list members ? */
-    return sb.toString();
+       private void shrink() {
+               shrinkToSize(maxSize);
+       }
+
+  private void shrinkToSize(int size) {
+    if ( size<maxSize && size < container.size() ) {
+                       // shrink
+                       while (size < container.size() ) {
+                               StoreIdentifier sid = (StoreIdentifier)container.getLast();
+                               sid.release();
+                               container.remove(sid);
+                       }
+               }
   }
 
+       /**
+        *  Method:       toString()
+        *  Description:  gives out statistical Information, viewable via
+        *                @see ServletStoreInfo.
+        *
+        *  @return       String
+        */
+       public String toString() {
+               StringBuffer sb = new StringBuffer("StoreContainer id: ");
+               sb.append(uniqueId).append(" for ");
+               sb.append(stocType.toString()).append(" // Current/Max size: ");
+               sb.append(container.size()).append(" / ");
+               sb.append(maxSize).append("\n");
+               /** @todo list members ? */
+               return sb.toString();
+       }
+
 }
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