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package org.activiti.engine.impl.persistence.entity;

import java.io.Serializable;

import org.activiti.engine.impl.context.Context;

/**
 * 

* Encapsulates the logic for transparently working with {@link ByteArrayEntity} . *

* */ public class ByteArrayRef implements Serializable { private static final long serialVersionUID = 1L; private String id; private String name; private ByteArrayEntity entity; protected boolean deleted; public ByteArrayRef() { } // Only intended to be used by ByteArrayRefTypeHandler public ByteArrayRef(String id) { this.id = id; } public String getId() { return id; } public String getName() { return name; } public byte[] getBytes() { ensureInitialized(); return (entity != null ? entity.getBytes() : null); } public void setValue(String name, byte[] bytes) { this.name = name; setBytes(bytes); } private void setBytes(byte[] bytes) { if (id == null) { if (bytes != null) { ByteArrayEntityManager byteArrayEntityManager = Context.getCommandContext().getByteArrayEntityManager(); entity = byteArrayEntityManager.create(); entity.setName(name); entity.setBytes(bytes); byteArrayEntityManager.insert(entity); id = entity.getId(); } } else { ensureInitialized(); entity.setBytes(bytes); } } public ByteArrayEntity getEntity() { ensureInitialized(); return entity; } public void delete() { if (!deleted && id != null) { if (entity != null) { // if the entity has been loaded already, // we might as well use the safer optimistic locking delete. Context.getCommandContext().getByteArrayEntityManager().delete(entity); } else { Context.getCommandContext().getByteArrayEntityManager().deleteByteArrayById(id); } entity = null; id = null; deleted = true; } } private void ensureInitialized() { if (id != null && entity == null) { entity = Context.getCommandContext().getByteArrayEntityManager().findById(id); name = entity.getName(); } } public boolean isDeleted() { return deleted; } @Override public String toString() { return "ByteArrayRef[id=" + id + ", name=" + name + ", entity=" + entity + (deleted ? ", deleted]" : "]"); } }




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