com.azaptree.services.domain.entity.impl.DomainEntity.java Source code

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Here is the source code for com.azaptree.services.domain.entity.impl.DomainEntity.java

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package com.azaptree.services.domain.entity.impl;

/*
 * #%L
 * AZAPTREE-DOMAIN-ENTITY
 * %%
 * Copyright (C) 2012 - 2013 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.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.util.UUID;

import org.apache.commons.beanutils.BeanUtils;
import org.springframework.util.Assert;

import com.azaptree.services.domain.entity.Entity;
import com.azaptree.services.json.JsonUtils;

public class DomainEntity implements Entity {

    protected UUID entityId;

    public DomainEntity() {
    }

    public DomainEntity(final Entity entity) {
        Assert.notNull(entity, "entity is required");
        setEntityId(entity.getEntityId());
    }

    public DomainEntity(final InputStream json) throws IOException {
        init(json);
    }

    public DomainEntity(final String json) {
        init(json);
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final DomainEntity other = (DomainEntity) obj;
        if (entityId == null) {
            if (other.entityId != null) {
                return false;
            }
        } else if (!entityId.equals(other.entityId)) {
            return false;
        }
        return true;
    }

    @Override
    public UUID getEntityId() {
        return entityId;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (entityId == null ? 0 : entityId.hashCode());
        return result;
    }

    @Override
    public void init(final InputStream json) throws IOException {
        final Object domainEntity = JsonUtils.parse(json, getClass());
        try {
            BeanUtils.copyProperties(this, domainEntity);
        } catch (IllegalAccessException | InvocationTargetException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void init(final String json) {
        try {
            init(new ByteArrayInputStream(json.getBytes("UTF-8")));
        } catch (final IOException e) {
            throw new RuntimeException(e);
        }
    }

    public void setEntityId(final UUID entityId) {
        this.entityId = entityId;
    }

    @Override
    public String toJson() {
        final ByteArrayOutputStream bos = new ByteArrayOutputStream(256);
        try {
            writeJson(bos);
        } catch (final IOException e) {
            throw new RuntimeException(e);
        }
        return bos.toString();
    }

    @Override
    public String toString() {
        return JsonUtils.serializePrettyPrint(this);
    }

    @Override
    public void writeJson(final OutputStream os) throws IOException {
        JsonUtils.serialize(os, this);
    }

}