com.mysema.query.jpa.impl.JPAUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of querydsl-jpa Show documentation

JPA support for Querydsl

There is a newer version: 3.7.4

/*
 * Copyright 2011, Mysema Ltd
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.mysema.query.jpa.impl;

import java.util.Map;

import javax.persistence.Query;

import com.mysema.query.types.ParamExpression;
import com.mysema.query.types.ParamNotSetException;
import com.mysema.query.types.expr.Param;

/**
 * JPAUtil provides static utility methods for JPA
 *
 * @author tiwe
 *
 */
public final class JPAUtil {

    private JPAUtil() {}

    public static void setConstants(Query query, Map constants, Map, Object> params) {
        for (Map.Entry entry : constants.entrySet()) {
            String key = entry.getValue();
            Object val = entry.getKey();
            if (Param.class.isInstance(val)) {
                val = params.get(val);
                if (val == null) {
                    throw new ParamNotSetException((Param) entry.getKey());
                }
            }
            query.setParameter(Integer.valueOf(key), val);
        }
    }

}