Example usage for com.google.common.base FinalizablePhantomReference FinalizablePhantomReference

Introduction

In this page you can find the example usage for com.google.common.base FinalizablePhantomReference FinalizablePhantomReference.

Prototype

protected FinalizablePhantomReference(T referent, FinalizableReferenceQueue queue) 

Source Link

Document

Constructs a new finalizable phantom reference.

Usage

From source file:eu.esdihumboldt.hale.common.instance.orient.storage.DatabaseHandle.java

/**
 * Create a database handle/*ww  w  . ja va 2 s  .c  om*/
 * 
 * @param database the database connection
 */
public DatabaseHandle(final ODatabaseDocumentTx database) {
    super();

    this.database = database;

    handleReferences.add(new FinalizablePhantomReference<DatabaseHandle>(this, referenceQueue) {

        @Override
        public void finalizeReferent() {
            handleReferences.remove(this);
            try {
                if (!database.isClosed()) {
                    database.close();
                }
            } catch (Exception e) {
                // ignore
            }
            log.info("Closed garbage collected database handle");
        }
    });
}

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From source file:org.opendaylight.yangtools.yang.model.repo.util.InMemorySchemaSourceCache.java

@Override
protected void offer(final T source) {
    final T present = cache.getIfPresent(source.getIdentifier());
    if (present == null) {
        cache.put(source.getIdentifier(), source);

        final SchemaSourceRegistration<T> reg = register(source.getIdentifier());
        final FinalizablePhantomReference<T> ref = new FinalizablePhantomReference<T>(source, queue) {
            @Override/*from w w w  . j a v  a2 s  .  c  om*/
            public void finalizeReferent() {
                reg.close();
                regs.remove(this);
            }
        };

        regs.add(ref);
    }
}

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From source file:eu.esdihumboldt.hale.common.instance.orient.storage.DatabaseHandle.java

/**
 * Add an object that references the database connection.
 * /*  w  w  w. j a  va 2 s  .  c  o m*/
 * It is preferred to use {@link #addInstance(Instance)} or
 * {@link #addGroup(Group)} instead.
 * 
 * @param object the object referencing the database
 */
public synchronized void addReference(Object object) {
    FinalizablePhantomReference<?> ref = new FinalizablePhantomReference<Object>(object, referenceQueue) {

        @Override
        public void finalizeReferent() {
            references.remove(this);
            removeReference();
        }
    };
    references.add(ref);
    count++;
}

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