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BaseCPUCCTNode.java

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package org.netbeans.lib.profiler.results.cpu.cct.nodes;

import org.netbeans.lib.profiler.results.cpu.cct.*;
import java.lang.ref.WeakReference;


/**
 *
 * @author Jaroslav Bachorik
 */
00051 public abstract class BaseCPUCCTNode implements RuntimeCPUCCTNode {
    //~ Inner Classes ------------------------------------------------------------------------------------------------------------

    private static class ArrayChildren implements Children {
        //~ Instance fields ------------------------------------------------------------------------------------------------------

        private RuntimeCPUCCTNode[] children;

        //~ Methods --------------------------------------------------------------------------------------------------------------

        public RuntimeCPUCCTNode getChildAt(int i) {
            return (children != null) ? children[i] : null;
        }

        public void accept(RuntimeCPUCCTNodeVisitor visitor) {
            if (children == null) {
                return;
            }

            for (int i = 0; i < children.length; i++) {
                children[i].accept(visitor);
            }
        }

        public void attachNode(RuntimeCPUCCTNode node) {
            addChildEntry();
            children[children.length - 1] = node;
        }

        public int size() {
            return (children != null) ? children.length : 0;
        }

        private void addChildEntry() {
            if (children == null) {
                children = new RuntimeCPUCCTNode[1];
            } else {
                RuntimeCPUCCTNode[] newch = new RuntimeCPUCCTNode[children.length + 1];
                System.arraycopy(children, 0, newch, 0, children.length);
                children = newch;
            }
        }
    }

    //~ Instance fields ----------------------------------------------------------------------------------------------------------

    private final Children children;
    private final WeakReference factoryRef;

    //~ Constructors -------------------------------------------------------------------------------------------------------------

    /** Creates a new instance of BaseCPUCCTNode */
00103     public BaseCPUCCTNode(CPUCCTNodeFactory parentFactory) {
        if (parentFactory != null) {
            this.factoryRef = new WeakReference(parentFactory);
        } else {
            this.factoryRef = null;
        }

        this.children = new ArrayChildren();
    }

    //~ Methods ------------------------------------------------------------------------------------------------------------------

    public synchronized Children getChildren() {
        return children;
    }

    public void attachNodeAsChild(RuntimeCPUCCTNode node) {
        children.attachNode(node);
    }

    protected CPUCCTNodeFactory getFactory() {
        return (factoryRef != null) ? (CPUCCTNodeFactory) factoryRef.get() : null;
    }
}

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