/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also 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 General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.core.domain.resource;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import org.rhq.core.domain.content.PackageVersion;
import org.rhq.core.domain.content.ProductVersionPackageVersion;
/**
* Used as a mapping between a resource and a package version. The resource will reference an instance of this entity to
* indicate the version of the resource. A package version can optionally reference an entity of this class to indicate
* it can only be installed on resources of a specific version.
*
* @author Jason Dobies
*/
@Entity
@NamedQueries( { @NamedQuery(name = ProductVersion.QUERY_FIND_BY_RESOURCE_TYPE_AND_VERSION, query = "SELECT pv FROM ProductVersion AS pv WHERE pv.resourceType = :resourceType AND pv.version = :version") })
@SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_PRD_VER_ID_SEQ", sequenceName = "RHQ_PRD_VER_ID_SEQ")
@Table(name = "RHQ_PRD_VER")
public class ProductVersion implements Serializable {
// Constants --------------------------------------------
private static final long serialVersionUID = 1L;
public static final String QUERY_FIND_BY_RESOURCE_TYPE_AND_VERSION = "ProductVersion.findByResourceTypeAndVersion";
// Attributes --------------------------------------------
@Column(name = "ID", nullable = false)
@GeneratedValue(strategy = GenerationType.AUTO, generator = "RHQ_PRD_VER_ID_SEQ")
@Id
private int id;
@Column(name = "VERSION", nullable = false)
private String version;
@JoinColumn(name = "RES_TYPE_ID", referencedColumnName = "ID", nullable = false)
@ManyToOne
private ResourceType resourceType;
@OneToMany(mappedBy = "productVersion", fetch = FetchType.LAZY)
private Set<Resource> resources;
@OneToMany(mappedBy = "productVersion", fetch = FetchType.LAZY)
private Set<ProductVersionPackageVersion> productVersionPackageVersions;
// Constructors --------------------------------------------
public ProductVersion() {
}
// Public --------------------------------------------
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getVersion() {
return version;
}
public void setVersion(String version) {
this.version = version;
}
public ResourceType getResourceType() {
return resourceType;
}
public void setResourceType(ResourceType resourceType) {
this.resourceType = resourceType;
}
public Set<Resource> getResources() {
return resources;
}
public void setResources(Set<Resource> resources) {
this.resources = resources;
}
/**
* Returns the explicit mapping entities.
*
* @return the mapping entities
*
* @see #getPackageVersions()
*/
public Set<ProductVersionPackageVersion> getProductVersionPackageVersions() {
return productVersionPackageVersions;
}
/**
* The package versions that this product version is associated with.
*
* <p>The returned set is not backed by this entity - if you want to alter the set of associated package versions,
* use {@link #getProductVersionPackageVersions()} or {@link #addPackageVersion(PackageVersion)},
* {@link #removePackageVersion(PackageVersion)}.</p>
*/
public Set<PackageVersion> getPackageVersions() {
HashSet<PackageVersion> packageVersions = new HashSet<PackageVersion>();
if (productVersionPackageVersions != null) {
for (ProductVersionPackageVersion pvpv : productVersionPackageVersions) {
packageVersions.add(pvpv.getProductVersionPackageVersionPK().getPackageVersion());
}
}
return packageVersions;
}
/**
* Directly assign a package version to this product version.
*
* @param packageVersion
*
* @return the mapping that was added
*/
public ProductVersionPackageVersion addPackageVersion(PackageVersion packageVersion) {
if (this.productVersionPackageVersions == null) {
this.productVersionPackageVersions = new HashSet<ProductVersionPackageVersion>();
}
ProductVersionPackageVersion mapping = new ProductVersionPackageVersion(this, packageVersion);
this.productVersionPackageVersions.add(mapping);
return mapping;
}
/**
* Removes the package version from this product version, if it exists. If it does exist, the mapping that was
* removed is returned; if the given package version did not exist as one that is a member of this product version,
* <code>null</code> is returned.
*
* @param packageVersion the package version to remove
*
* @return the mapping that was removed or <code>null</code> if the package version was not mapped to this product
* version
*/
public ProductVersionPackageVersion removePackageVersion(PackageVersion packageVersion) {
if ((this.productVersionPackageVersions == null) || (packageVersion == null)) {
return null;
}
ProductVersionPackageVersion doomed = null;
for (ProductVersionPackageVersion pvpv : this.productVersionPackageVersions) {
if (packageVersion.equals(pvpv.getProductVersionPackageVersionPK().getPackageVersion())) {
doomed = pvpv;
break;
}
}
if (doomed != null) {
this.productVersionPackageVersions.remove(doomed);
}
return doomed;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof ProductVersion)) {
return false;
}
ProductVersion that = (ProductVersion) o;
if (!resourceType.equals(that.resourceType)) {
return false;
}
if (!version.equals(that.version)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result;
result = version.hashCode();
result = (31 * result) + resourceType.hashCode();
return result;
}
@Override
public String toString() {
return "ProductVersion[Version=" + version + ", " + resourceType + "]";
}
}