org.apache.olingo.ext.proxy.context.EntityUUID.java Source code

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Here is the source code for org.apache.olingo.ext.proxy.context.EntityUUID.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.olingo.ext.proxy.context;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.ClassUtils;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import java.io.Serializable;
import java.net.URI;

import org.apache.olingo.ext.proxy.api.EntityType;

public class EntityUUID implements Serializable {

    private static final long serialVersionUID = 4855025769803086495L;

    private final URI entitySetURI;

    private final Object key;

    /**
     * Needed when representing a new entity, where key is potentially null. The temp key is used via reflection
     */
    @SuppressWarnings("unused")
    private final int tempKey;

    private Class<?> type;

    public EntityUUID(final URI entitySetURI, final Class<?> type) {
        this(entitySetURI, type, null);
    }

    public EntityUUID(final URI entitySetURI, final Class<?> type, final Object key) {
        this.entitySetURI = entitySetURI;
        this.key = key;
        this.tempKey = (int) (Math.random() * 1000000);

        if (type == null || !Serializable.class.isAssignableFrom(type)) {
            throw new IllegalArgumentException("Invalid Entity type class: " + type);
        }
        if (this.type == null) {
            for (Class<?> clazz : ClassUtils.hierarchy(type, ClassUtils.Interfaces.INCLUDE)) {
                if (ArrayUtils.contains(clazz.getInterfaces(), EntityType.class)) {
                    this.type = clazz;
                }
            }
        }
    }

    public URI getEntitySetURI() {
        return entitySetURI;
    }

    public Object getKey() {
        return key;
    }

    public Class<?> getType() {
        return type;
    }

    @Override
    public boolean equals(final Object obj) {
        return key == null ? EqualsBuilder.reflectionEquals(this, obj)
                : EqualsBuilder.reflectionEquals(this, obj, "tempKey");
    }

    @Override
    public int hashCode() {
        return key == null ? HashCodeBuilder.reflectionHashCode(this)
                : HashCodeBuilder.reflectionHashCode(this, "tempKey");
    }

    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this, ToStringStyle.SIMPLE_STYLE);
    }
}