com.wantscart.jade.provider.Definition.java Source code

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Here is the source code for com.wantscart.jade.provider.Definition.java

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/*
 * Copyright 2009-2010 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 i 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.wantscart.jade.provider;

import com.wantscart.jade.core.GenericUtils;
import org.apache.commons.lang.ArrayUtils;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.Map;

/**
 * ?? Definition  DAO <br/>
 * <p/>
 * {@link Definition#constants}
 * Map??????????Map
 *
 * @author  [qieqie.wang@gmail.com]
 * @author  [in355hz@gmail.com]
 */
public class Definition {

    private final Class<?> clazz;

    private final Class<?> genericsClazz;

    private final Map<String, ?> constants;

    public Definition(Class<?> clazz) {
        this.clazz = clazz;
        Type[] genTypes = clazz.getGenericInterfaces();
        if (ArrayUtils.isNotEmpty(genTypes)) {
            Type[] params = ((ParameterizedType) genTypes[0]).getActualTypeArguments();
            if (params.length > 0) {
                this.genericsClazz = (Class<?>) params[0];
            } else {
                this.genericsClazz = null;
            }
        } else {
            this.genericsClazz = null;
        }
        this.constants = Collections.unmodifiableMap( // NL
                GenericUtils.getConstantFrom(clazz, true, true));
    }

    public String getName() {
        return clazz.getName();
    }

    public Map<String, ?> getConstants() {
        return constants;
    }

    public Class<?> getDAOClazz() {
        return clazz;
    }

    public Class<?> getDAOGenericsClazz() {
        return genericsClazz;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Definition) {
            Definition definition = (Definition) obj;
            return clazz.equals(definition.clazz);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return clazz.hashCode() * 13;
    }

    @Override
    public String toString() {
        return clazz.getName();
    }
}