org.apache.ibatis.mapping.Discriminator.java Source code

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Here is the source code for org.apache.ibatis.mapping.Discriminator.java

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/**
 *    Copyright 2009-2015 the original author or authors.
 *
 *    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 org.apache.ibatis.mapping;

import java.util.Collections;
import java.util.Map;

import org.apache.ibatis.session.Configuration;

/**
 * @author Clinton Begin
 */
public class Discriminator {

    private ResultMapping resultMapping;
    private Map<String, String> discriminatorMap;

    Discriminator() {
    }

    public static class Builder {
        private Discriminator discriminator = new Discriminator();

        public Builder(Configuration configuration, ResultMapping resultMapping,
                Map<String, String> discriminatorMap) {
            discriminator.resultMapping = resultMapping;
            discriminator.discriminatorMap = discriminatorMap;
        }

        public Discriminator build() {
            assert discriminator.resultMapping != null;
            assert discriminator.discriminatorMap != null;
            assert !discriminator.discriminatorMap.isEmpty();
            //lock down map
            discriminator.discriminatorMap = Collections.unmodifiableMap(discriminator.discriminatorMap);
            return discriminator;
        }
    }

    public ResultMapping getResultMapping() {
        return resultMapping;
    }

    public Map<String, String> getDiscriminatorMap() {
        return discriminatorMap;
    }

    public String getMapIdFor(String s) {
        return discriminatorMap.get(s);
    }

}