List of activationDepth() Examples

Examples of activationDepth()

com.db4o.config.Configuration.activationDepth()
ct foo is the result of a query, it is delivered by the ObjectSet Object foo = objectSet.next(); foo.member1.member2.member3.member4.member5 will be a valid object
foo, member1, member2, member3 and member4 will be activated
member5 will be deactivated, all of it's members will be null
member5 can be activated at any time by calling {@link com.db4o.ObjectContainer#activate(Object,int)}.

Note that raising the global activation depth will consume more memory and have negative effects on the performance of first-time retrievals. Lowering the global activation depth needs more individual activation work but can increase performance of queries.

{@link com.db4o.ObjectContainer#deactivate(Object,int)}can be used to manually free memory by deactivating objects.

In client/server environment the same setting should be used on both client and server

. @param depth the desired global activation depth. @see ObjectClass#maximumActivationDepth configuring classes individually

Examples of com.db4o.config.Configuration.activationDepth()

//    });
//    config.messageLevel(3);


    config.automaticShutDown(false);
  config.callbacks(false);
    config.activationDepth(2);
    config.flushFileBuffers(false);
    config.callConstructors(true);
    config.exceptionsOnNotStorable(true);
    configureAbstractEntity(config);
    config.objectClass(BookMark.class).objectField("fFeedLink").indexed(true); //$NON-NLS-1$

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Examples of com.db4o.config.Configuration.activationDepth()

//      public void onDiagnostic(Diagnostic d) {
//        System.out.println(d);
//      }
//    });
    globalConfig.messageLevel(0);
    globalConfig.activationDepth(1);
    globalConfig.flushFileBuffers(false);
    globalConfig.callConstructors(true);
    globalConfig.exceptionsOnNotStorable(true);
    globalConfig.objectClass(AbstractEntity.class).objectField("fId").indexed(true); //$NON-NLS-1$
    globalConfig.objectClass(AbstractEntity.class).objectField("fId").cascadeOnActivate(true); //$NON-NLS-1$

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Examples of com.db4o.config.Configuration.activationDepth()


    config.lockDatabaseFile(false);
    config.queries().evaluationMode(forDefrag ? QueryEvaluationMode.LAZY : QueryEvaluationMode.IMMEDIATE);
    config.automaticShutDown(false);
    config.callbacks(false);
    config.activationDepth(2);
    config.callConstructors(true);
    config.exceptionsOnNotStorable(true);
    configureAbstractEntity(config);
    config.objectClass(BookMark.class).objectField("fFeedLink").indexed(true); //$NON-NLS-1$
    config.objectClass(ConditionalGet.class).objectField("fLink").indexed(true); //$NON-NLS-1$

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Examples of com.db4o.config.Configuration.activationDepth()

    // LAZY appears to cause ClassCastException's relating to db4o objects inside db4o code. :(
    // Also it causes duplicates if we activate immediately.
    // And the performance gain for e.g. RegisterMeRunner isn't that great.
//    dbConfig.queries().evaluationMode(QueryEvaluationMode.LAZY);
    dbConfig.messageLevel(1);
    dbConfig.activationDepth(1);
    /* TURN OFF SHUTDOWN HOOK.
     * The shutdown hook does auto-commit. We do NOT want auto-commit: if a
     * transaction hasn't commit()ed, it's not safe to commit it. For example,
     * a splitfile is started, gets half way through, then we shut down.
     * The shutdown hook commits the half-finished transaction. When we start

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Examples of com.db4o.config.Configuration.activationDepth()

    dbConfig.diagnostic().addListener(new DB4ODiagnosticListener());


    dbConfig.exceptionsOnNotStorable(false);


    System.err.println("Optimise native queries: "+dbConfig.optimizeNativeQueries());
    System.err.println("Query activation depth: "+dbConfig.activationDepth());


    // The database is encrypted.
    if(databaseKey != null) {
      IoAdapter baseAdapter = dbConfig.io();
      try {

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Examples of com.db4o.config.Configuration.activationDepth()


    config.lockDatabaseFile(true);
    config.queries().evaluationMode(forDefrag ? QueryEvaluationMode.LAZY : QueryEvaluationMode.IMMEDIATE);
    config.automaticShutDown(false);
    config.callbacks(false);
    config.activationDepth(2);
    config.flushFileBuffers(false);
    config.callConstructors(true);
    config.exceptionsOnNotStorable(true);
    configureAbstractEntity(config);
    config.objectClass(BookMark.class).objectField("fFeedLink").indexed(true); //$NON-NLS-1$

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