org.easy.criteria.QueryProperties.java Source code

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Here is the source code for org.easy.criteria.QueryProperties.java

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/**
 * Copyright  2011 Aftab Mahmood
 * 
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   any later version.
    
 *   This program 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 General Public License for more details <http://www.gnu.org/licenses/>.
 **/
package org.easy.criteria;

import javax.persistence.FlushModeType;
import javax.persistence.LockModeType;
import javax.persistence.Query;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class QueryProperties {
    private static Log log = LogFactory.getLog(QueryProperties.class);

    String hintKey = null;
    String hintValue = null;
    FlushModeType flashMode = null;
    LockModeType lockMode = null;

    int startIndex = -1;
    int maxResult = -1;

    public static QueryProperties getDefaultProperties() {
        return new QueryProperties();
    }

    public void setFlushMode(FlushModeType flushMode) {
        this.flashMode = flushMode;
    }

    public void setLockMode(LockModeType lockMode) {
        this.lockMode = lockMode;
    }

    public void setHint(String key, String value) {
        hintKey = key;
        hintValue = value;
    }

    public void setStartIndex(int startIndex) {
        this.startIndex = startIndex;
    }

    public void setMaxResult(int maxResult) {
        this.maxResult = maxResult;
    }

    public void applyProperties(Query query) {
        if (flashMode != null) {
            log.debug("flashMode = " + flashMode);
            query.setFlushMode(flashMode);
        }

        if (lockMode != null) {
            log.debug("lockMode = " + lockMode);
            query.setLockMode(lockMode);
        }

        if (hintKey != null) {
            log.debug("hintKey = " + hintKey);
            log.debug("hintValue = " + hintValue);
            query.setHint(hintKey, hintValue);
        }

        if (startIndex >= 0 && maxResult > 0) {
            log.debug("startIndex = " + startIndex * maxResult);
            query.setFirstResult(startIndex * maxResult);
        }

        if (maxResult > 0) {
            log.debug("maxResult = " + maxResult);
            query.setMaxResults(maxResult);
        }
    }

}