com.azaptree.services.commons.TypeReferenceKey.java Source code

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Here is the source code for com.azaptree.services.commons.TypeReferenceKey.java

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package com.azaptree.services.commons;

/*
 * #%L
 * AZAPTREE-SERVICES-COMMONS
 * %%
 * Copyright (C) 2012 AZAPTREE.COM
 * %%
 * 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.
 * #L%
 */

import java.lang.reflect.ParameterizedType;

import org.springframework.util.Assert;

/**
 * 
 * References a generic type.
 * 
 * See: http://gafter.blogspot.com/2006/12/super-type-tokens.html
 * 
 * 
 * @author alfio
 * 
 * @param <T>
 */
public abstract class TypeReferenceKey<T> extends TypeReference<T> {

    private boolean required = false;
    private T defaultValue;
    private final String name;
    private final int hashCode;

    protected TypeReferenceKey() {
        super();
        name = getRawType().getSimpleName();
        this.hashCode = name.hashCode();
    }

    protected TypeReferenceKey(final boolean required) {
        this();
        this.required = required;
    }

    protected TypeReferenceKey(final boolean required, final T defaultValue) {
        super();
        this.required = required;
        this.defaultValue = defaultValue;
        name = getRawType().getSimpleName();
        this.hashCode = name.hashCode();
    }

    public TypeReferenceKey(final String name, final boolean required) {
        super();
        this.name = name;
        this.required = required;
        this.hashCode = name.hashCode();
    }

    protected TypeReferenceKey(final String name, final boolean required, final T defaultValue) {
        super();
        Assert.hasText(name);
        this.name = name;
        this.hashCode = name.hashCode();
        this.required = required;
        this.defaultValue = defaultValue;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof TypeReferenceKey)) {
            return false;
        }
        @SuppressWarnings("rawtypes")
        final TypeReferenceKey other = (TypeReferenceKey) obj;
        return name.equals(other.name) && getRawType().equals(other.getRawType());
    }

    public T getDefaultValue() {
        return defaultValue;
    }

    public String getName() {
        return name;
    }

    @Override
    public Class<?> getRawType() {
        return type instanceof Class<?> ? (Class<?>) type : (Class<?>) ((ParameterizedType) type).getRawType();
    }

    @Override
    public int hashCode() {
        return hashCode;
    }

    public boolean isRequired() {
        return required;
    }

    @Override
    public String toString() {
        return String.format("TypeReferenceKey [type=%s, required=%s, defaultValue=%s, name=%s]", type, required,
                defaultValue, name);
    }

}