package rocks.inspectit.shared.all.cmr.model;

import java.io.Serializable;

import javax.persistence.DiscriminatorColumn;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
import javax.validation.constraints.NotNull;

import org.codehaus.jackson.annotate.JsonAutoDetect;
import org.codehaus.jackson.annotate.JsonAutoDetect.Visibility;
import org.codehaus.jackson.annotate.JsonIgnore;

/**
 * The Sensor Type Ident class is the abstract base class for the {@link MethodSensorTypeIdent} and
 * {@link PlatformSensorTypeIdent} and {@link JmxSensorTypeIdent} classes.
 *
 * @author Patrice Bouillet
 *
 */
@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(length = 4, name = "DISCRIMINATOR")
@Table(uniqueConstraints = @UniqueConstraint(columnNames = { "platformIdent", "fullyQualifiedClassName" }))
@JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, setterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE)
public abstract class SensorTypeIdent implements Serializable {

	/**
	 * The serial version UID.
	 */
	private static final long serialVersionUID = -8196924255255396992L;

	/**
	 * The id of this instance (if persisted, otherwise <code>null</code>).
	 */
	@Id
	@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "SENSOR_IDENT_SEQUENCE")
	@SequenceGenerator(name = "SENSOR_IDENT_SEQUENCE", sequenceName = "SENSOR_IDENT_SEQUENCE")
	private Long id;

	/**
	 * The many-to-many association to the {@link PlatformIdent} objects.
	 */
	@ManyToOne
	@JoinColumn(name = "platformIdent", nullable = false)
	@JsonIgnore
	private PlatformIdent platformIdent;

	/**
	 * The fully qualified class name of the sensor type.
	 */
	@NotNull
	private String fullyQualifiedClassName;

	/**
	 * Gets {@link #id}.
	 *
	 * @return {@link #id}
	 */
	public Long getId() {
		return id;
	}

	/**
	 * Sets {@link #id}.
	 *
	 * @param id
	 *            New value for {@link #id}
	 */
	public void setId(Long id) {
		this.id = id;
	}

	/**
	 * Gets {@link #platformIdent}.
	 *
	 * @return {@link #platformIdent}
	 */
	public PlatformIdent getPlatformIdent() {
		return platformIdent;
	}

	/**
	 * Sets {@link #platformIdent}.
	 *
	 * @param platformIdent
	 *            New value for {@link #platformIdent}
	 */
	public void setPlatformIdent(PlatformIdent platformIdent) {
		this.platformIdent = platformIdent;
	}

	/**
	 * Gets {@link #fullyQualifiedClassName}.
	 *
	 * @return {@link #fullyQualifiedClassName}
	 */
	public String getFullyQualifiedClassName() {
		return fullyQualifiedClassName;
	}

	/**
	 * Sets {@link #fullyQualifiedClassName}.
	 *
	 * @param fullyQualifiedClassName
	 *            New value for {@link #fullyQualifiedClassName}
	 */
	public void setFullyQualifiedClassName(String fullyQualifiedClassName) {
		this.fullyQualifiedClassName = fullyQualifiedClassName;
	}

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

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		SensorTypeIdent other = (SensorTypeIdent) obj;
		if (fullyQualifiedClassName == null) {
			if (other.fullyQualifiedClassName != null) {
				return false;
			}
		} else if (!fullyQualifiedClassName.equals(other.fullyQualifiedClassName)) {
			return false;
		}
		if (id == null) {
			if (other.id != null) {
				return false;
			}
		} else if (!id.equals(other.id)) {
			return false;
		}
		return true;
	}

}