Example usage for java.lang.ref SoftReference SoftReference

Introduction

In this page you can find the example usage for java.lang.ref SoftReference SoftReference.

Prototype

public SoftReference(T referent)

Source Link

Document

Creates a new soft reference that refers to the given object.

Usage

From source file:com.xpn.xwiki.doc.XWikiDocument.java

public void loadArchive(XWikiContext context) throws XWikiException {
    if (this.archive == null || this.archive.get() == null) {
        XWikiDocumentArchive arch = getVersioningStore(context).getXWikiDocumentArchive(this, context);
        // We are using a SoftReference which will allow the archive to be
        // discarded by the Garbage collector as long as the context is closed (usually during
        // the request)
        this.archive = new SoftReference<XWikiDocumentArchive>(arch);
    }//  w  w  w.  j  av  a 2s  . c  om
}

From source file:com.xpn.xwiki.doc.XWikiDocument.java

public void setDocumentArchive(XWikiDocumentArchive arch) {
    // We are using a SoftReference which will allow the archive to be
    // discarded by the Garbage collector as long as the context is closed (usually during the
    // request)/*from  w ww  .ja  va  2  s  .c  o  m*/
    if (arch != null) {
        this.archive = new SoftReference<XWikiDocumentArchive>(arch);
    }
}

From source file:uk.ac.ed.epcc.webapp.model.data.Repository.java

/** return the Record cache or null
 * Even if caching is enabled this may still return null under 
 * heavy memory pressure./*from  w ww.j a v  a2s  .  c  o  m*/
 * 
 * @return
 */
private final Map<Integer, Record> getCache() {

    if (!use_cache) {
        return null;
    }
    synchronized (this) {
        if (cache_ref == null || cache_ref.get() == null) {
            cache_ref = new SoftReference<Map<Integer, Record>>(new HashMap<Integer, Record>());
        }
        // there is a potential race condition here as the reference may be cleared 
        // by the gc between the previous line and the next. 
        return cache_ref.get();
    }
}

From source file:org.codehaus.groovy.grails.web.util.StreamCharBuffer.java

void addParentBuffer(StreamCharBuffer parent) {
    if (!notifyParentBuffersEnabled)
        return;// www .j a  v  a2  s .  c  o  m

    if (parentBuffers == null) {
        parentBuffers = new HashSet<SoftReference<StreamCharBufferKey>>();
    }
    parentBuffers.add(new SoftReference<StreamCharBufferKey>(parent.bufferKey));
}

From source file:org.apache.axis2.jaxws.description.impl.ServiceDescriptionImpl.java

public void setResolvedHandlersDescription(PortInfo portInfo,
        ResolvedHandlersDescription resolvedHandlersInfo) {
    // Get the cache and store the handler description
    Map<PortInfo, ResolvedHandlersDescription> cache = resolvedHandlersDescription.get();

    if (cache == null) {
        cache = new ConcurrentHashMap<PortInfo, ResolvedHandlersDescription>();
        resolvedHandlersDescription = new SoftReference<Map<PortInfo, ResolvedHandlersDescription>>(cache);

    }//w  w w  .j ava  2 s.  c  om
    cache.put(portInfo, resolvedHandlersInfo);

}

From source file:com.codename1.impl.android.AndroidImplementation.java

/**
 * @inheritDoc
 */
public Object createSoftWeakRef(Object o) {
    return new SoftReference(o);
}

From source file:org.talend.designer.core.model.components.EmfComponent.java

/**
 * return the common ComponentResourceFactoryImpl to retreive component resource from URI
 * //  ww  w  .java  2s .c o m
 * @return factoryImpl
 */
// here we are using soft references so that whenever the GC runs it can collect the ComponentResourceFactoryImpl
private static ComponentResourceFactoryImpl getComponentResourceFactoryImpl() {
    ComponentResourceFactoryImpl factoryImpl = compResFactorySoftRef == null ? null
            : compResFactorySoftRef.get();
    if (factoryImpl == null) {// if weak ref has not been created or if referenced factory has been GCed then create
        // a new one
        factoryImpl = new ComponentResourceFactoryImpl();
        compResFactorySoftRef = new SoftReference<ComponentResourceFactoryImpl>(factoryImpl);
    }
    return factoryImpl;
}

From source file:org.talend.designer.core.model.components.EmfComponent.java

/**
 * return the common ComponentResourceFactoryImpl to retreive component resource from URI
 * /*from  w  w  w .j a va2s.  co  m*/
 * @return factoryImpl
 */
// here we are using soft references so that whenever the GC runs it can collect the ComponentResourceFactoryImpl
private static Map getLoadingOptionMap() {
    Map optionMap = (optionMapSoftRef == null ? null : optionMapSoftRef.get());
    if (optionMap == null) {// if weak ref has not been created or if referenced factory has been GCed then create
        // a new one
        optionMap = new HashMap();
        optionMap.put(XMLResource.OPTION_DEFER_ATTACHMENT, Boolean.TRUE);
        optionMap.put(XMLResource.OPTION_DEFER_IDREF_RESOLUTION, Boolean.TRUE);
        optionMap.put(XMLResource.OPTION_USE_PARSER_POOL, new XMLParserPoolImpl());
        optionMap.put(XMLResource.OPTION_USE_XML_NAME_TO_FEATURE_MAP, new HashMap());
        optionMap.put(XMLResource.OPTION_USE_DEPRECATED_METHODS, Boolean.FALSE);
        optionMapSoftRef = new SoftReference<Map>(optionMap);
    }
    return optionMap;
}