GlobalResource.java

// ============================================================================
//
// Copyright (C) 2006-2011 Talend Inc. - www.talend.com
//
// This source code is available under agreement available at
// %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt
//
// You should have received a copy of the agreement
// along with this program; if not, write to Talend SA
// 9 rue Pages 92150 Suresnes, France
//
// ============================================================================
package routines.system;

import java.util.HashMap;
import java.util.Map;

public class GlobalResource {

    // let it support the top level Object
    public static Map<Object, Object> resourceMap = new HashMap<Object, Object>();
    // when there is multiple threads wants to insert stats&logs&meta into DB, it is used as a locker. bug:22677
    public static TalendMultiThreadLockMap resourceLockMap = new TalendMultiThreadLockMap(); 
    
    public static class TalendMultiThreadLockMap {

        private Map<Object, Object> tMultiTheadLockMap = new HashMap<Object, Object>();

        public Object get(Object key) {
            if (tMultiTheadLockMap.get(key) == null) {
                synchronized (TalendMultiThreadLockMap.this) {
                    if (tMultiTheadLockMap.get(key) == null) {
                        tMultiTheadLockMap.put(key, new Object());
                    }
                }
            }
            return tMultiTheadLockMap.get(key);
        }
    }
}