gr.abiss.calipso.model.entities.AbstractMetadatum.java Source code

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Here is the source code for gr.abiss.calipso.model.entities.AbstractMetadatum.java

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/**
 *
 *
 * Copyright (c) 2007 - 2013 www.Abiss.gr
 *
 * 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.
 */
package gr.abiss.calipso.model.entities;

import gr.abiss.calipso.model.base.AbstractSystemUuidPersistable;
import gr.abiss.calipso.model.interfaces.MetadataSubject;
import gr.abiss.calipso.model.interfaces.Metadatum;

import javax.persistence.Column;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.MappedSuperclass;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;

import org.apache.commons.lang3.builder.EqualsBuilder;

import com.fasterxml.jackson.annotation.JsonIgnore;

/**
 * Abstract base persistent class for metadata entries. Implementations can
 * override relational specifics via javax.persistence.AssociationOverride
 * annotations
 */
@MappedSuperclass
@Table(uniqueConstraints = { @UniqueConstraint(columnNames = { "subject", "predicate" }) })
public abstract class AbstractMetadatum<S extends MetadataSubject> extends AbstractSystemUuidPersistable
        implements Metadatum<S> {

    private static final long serialVersionUID = -1468517690700208260L;

    @JsonIgnore
    @ManyToOne
    @JoinColumn(name = "subject", nullable = false)
    private S subject;

    @Column(name = "predicate", nullable = false, insertable = true, updatable = false)
    private String predicate;

    @Column(name = "object")
    private String object;

    public AbstractMetadatum() {
        super();
    }

    public AbstractMetadatum(S subject, String predicate, String object) {
        super();
        this.predicate = predicate;
        this.object = object;
        this.subject = subject;
        // this.subject.addMetadatum(this);
    }

    @Override
    public boolean equals(Object obj) {
        if (null == obj) {
            return false;
        }

        if (this == obj) {
            return true;
        }
        if (!AbstractMetadatum.class.isInstance(obj)) {
            return false;
        }
        @SuppressWarnings("rawtypes")
        AbstractMetadatum that = (AbstractMetadatum) obj;
        return new EqualsBuilder().append(this.getSubject(), that.getSubject())
                .append(this.getPredicate(), that.getPredicate()).isEquals();
    }

    @Override
    public S getSubject() {
        return subject;
    }

    @Override
    public void setSubject(S subject) {
        this.subject = subject;
    }

    @Override
    public String getPredicate() {
        return predicate;
    }

    @Override
    public void setPredicate(String predicate) {
        this.predicate = predicate;
    }

    @Override
    public String getObject() {
        return object;
    }

    @Override
    public void setObject(String object) {
        this.object = object;
    }

}