HistoryValue.java

package fr.openwide.core.jpa.more.business.history.model.embeddable;

import java.io.Serializable;

import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.Basic;
import javax.persistence.Embeddable;
import javax.persistence.Embedded;

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.bindgen.Bindable;
import org.hibernate.search.annotations.Analyze;
import org.hibernate.search.annotations.Field;
import org.hibernate.search.annotations.FieldBridge;

import fr.openwide.core.jpa.business.generic.model.GenericEntityReference;
import fr.openwide.core.jpa.search.bridge.NullEncodingGenericEntityReferenceFieldBridge;

@Embeddable
@Bindable
@Access(AccessType.FIELD)
public class HistoryValue implements Serializable {
	
	private static final long serialVersionUID = 1251495816635000683L;

	public static final String REFERENCE = "reference";

	/**
	 * Human-readable string
	 */
	@Basic
	private String label;

	/**
	 * Machine-readable string (for instance MyEnum.VALUE.name())
	 */
	@Basic
	private String serialized;
	
	@Embedded
	@Field(name = REFERENCE, bridge = @FieldBridge(impl = NullEncodingGenericEntityReferenceFieldBridge.class), analyze = Analyze.NO)
	private HistoryEntityReference reference;

	public HistoryValue() {
		// nothing to do
	}

	public HistoryValue(String label) {
		this(label, null, null);
	}

	public HistoryValue(String label, String serialized) {
		this(label, serialized, null);
	}

	public HistoryValue(String label, GenericEntityReference<Long, ?> entityValueReference) {
		this(label, null, entityValueReference);
	}

	private HistoryValue(String label, String serialized, GenericEntityReference<Long, ?> entityValueReference) {
		super();
		this.label = label;
		this.serialized = serialized;
		this.reference = HistoryEntityReference.from(entityValueReference);
	}

	public String getLabel() {
		return label;
	}
	
	public String getSerialized() {
		return serialized;
	}

	public HistoryEntityReference getReference() {
		return reference;
	}
	
	@Override
	public String toString() {
		if (reference != null) {
			return reference.toString();
		} else {
			return label;
		}
	}
	
	@Override
	public boolean equals(Object obj) {
		if (!(obj instanceof HistoryValue)) {
			return false;
		}
		HistoryValue other = (HistoryValue) obj;
		return new EqualsBuilder()
				.append(getLabel(), other.getLabel())
				.append(getSerialized(), other.getSerialized())
				.append(getReference(), other.getReference())
				.isEquals();
	}
	
	@Override
	public int hashCode() {
		return new HashCodeBuilder()
				.append(getLabel())
				.append(getSerialized())
				.append(getReference())
				.build();
	}

}