org.hibernate.ejb.metamodel.AbstractAttribute.java Source code

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Here is the source code for org.hibernate.ejb.metamodel.AbstractAttribute.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2009 by Red Hat Inc and/or its affiliates or by
 * third-party contributors as indicated by either @author tags or express
 * copyright attribution statements applied by the authors.  All
 * third-party contributions are distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.ejb.metamodel;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.ManagedType;

import org.apache.commons.lang3.StringUtils;
import org.hibernate.internal.util.ReflectHelper;

/**
 * Models the commonality of the JPA {@link Attribute} hierarchy.
 * 
 * @author Steve Ebersole
 */
public abstract class AbstractAttribute<X, Y> implements Attribute<X, Y>, AttributeImplementor<X, Y>, Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 7332871854990313704L;
    private final String name;
    private final Class<Y> javaType;
    private final AbstractManagedType<X> declaringType;
    private transient Member member;
    private final PersistentAttributeType persistentAttributeType;
    private Integer weight = 0;

    public AbstractAttribute(String name, Class<Y> javaType, AbstractManagedType<X> declaringType, Member member,
            PersistentAttributeType persistentAttributeType) {
        this.name = name;
        this.javaType = javaType;
        this.declaringType = declaringType;
        this.member = member;
        this.persistentAttributeType = persistentAttributeType;
    }

    /**
     * {@inheritDoc}
     */
    public String getName() {
        return name;
    }

    /**
     * {@inheritDoc}
     */
    public ManagedType<X> getDeclaringType() {
        return declaringType;
    }

    /**
     * {@inheritDoc}
     */
    public Class<Y> getJavaType() {
        return javaType;
    }

    /**
     * {@inheritDoc}
     */
    public Member getJavaMember() {
        return member;
    }

    /**
     * {@inheritDoc}
     */
    public PersistentAttributeType getPersistentAttributeType() {
        return persistentAttributeType;
    }

    /**
     * Used by JDK serialization...
     * 
     * @param ois
     *            The input stream from which we are being read...
     * @throws java.io.IOException
     *             Indicates a general IO stream exception
     * @throws ClassNotFoundException
     *             Indicates a class resolution issue
     */
    protected void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
        ois.defaultReadObject();
        final String memberDeclaringClassName = (String) ois.readObject();
        final String memberName = (String) ois.readObject();
        final String memberType = (String) ois.readObject();

        final Class memberDeclaringClass = Class.forName(memberDeclaringClassName, false,
                declaringType.getJavaType().getClassLoader());
        try {
            this.member = "method".equals(memberType)
                    ? memberDeclaringClass.getMethod(memberName, ReflectHelper.NO_PARAM_SIGNATURE)
                    : memberDeclaringClass.getField(memberName);
        } catch (Exception e) {
            throw new IllegalStateException(
                    "Unable to locate member [" + memberDeclaringClassName + "#" + memberName + "]");
        }
    }

    /**
     * Used by JDK serialization...
     * 
     * @param oos
     *            The output stream to which we are being written...
     * @throws IOException
     *             Indicates a general IO stream exception
     */
    protected void writeObject(ObjectOutputStream oos) throws IOException {
        oos.defaultWriteObject();
        oos.writeObject(getJavaMember().getDeclaringClass().getName());
        oos.writeObject(getJavaMember().getName());
        // should only ever be a field or the getter-method...
        oos.writeObject(Method.class.isInstance(getJavaMember()) ? "method" : "field");
    }

    public Integer getWeight() {
        return this.weight;
    }

    public void setWeight(Integer weight) {
        this.weight = weight;
    }

    public String getHumanName() {
        return StringUtils.join(StringUtils.splitByCharacterTypeCamelCase(StringUtils.capitalize(this.getName())),
                ' ');
    }
}