org.paxml.bean.AbstractLazyTag.java Source code

Introduction

Here is the source code for org.paxml.bean.AbstractLazyTag.java

Source

/**
 * This file is part of PaxmlCore.
 *
 * PaxmlCore is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PaxmlCore is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with PaxmlCore.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.paxml.bean;

import java.util.Iterator;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.Transformer;
import org.paxml.core.Context;

/**
 * Random tag impl.
 * 
 * @author Xuetao Niu
 * 
 */

public abstract class AbstractLazyTag extends BeanTag {
    private boolean lazy;

    protected abstract Iterator getIterator(Context context) throws Exception;

    @Override
    protected Object doInvoke(Context context) throws Exception {
        Iterator it = getIterator(context);
        if (lazy) {
            return it;
        } else {
            return CollectionUtils.collect(it, new Transformer() {

                @Override
                public Object transform(Object obj) {
                    return obj;
                }

            });
        }
    }

    public boolean isLazy() {
        return lazy;
    }

    public void setLazy(boolean lazy) {
        this.lazy = lazy;
    }

}