/*
* 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.group;
import java.io.Serializable;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import org.rhq.core.domain.util.StringUtils;
@Entity
@NamedQueries( {
@NamedQuery(name = GroupDefinition.QUERY_FIND_ALL, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd "), //
@NamedQuery(name = GroupDefinition.QUERY_FIND_BY_NAME, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd " //
+ " WHERE LOWER(gd.name) = LOWER(:name)"), //
@NamedQuery(name = GroupDefinition.QUERY_FIND_ALL_MEMBERS, query = "" //
+ "SELECT rg " //
+ " FROM ResourceGroup rg " //
+ " WHERE rg.groupDefinition IS NOT NULL "), //
@NamedQuery(name = GroupDefinition.QUERY_FIND_MANAGED_RESOURCE_GROUP_IDS_ADMIN, query = "" //
+ "SELECT rg.id " //
+ " FROM ResourceGroup rg " //
+ " WHERE rg.groupDefinition.id = :groupDefinitionId "),
@NamedQuery(name = GroupDefinition.QUERY_FIND_MANAGED_RESOURCE_GROUP_SIZE_ADMIN, query = "" //
+ "SELECT COUNT(rg.id) " //
+ " FROM ResourceGroup rg " //
+ " WHERE rg.groupDefinition.id = :groupDefinitionId "),
/*
* the next recalculation interval is defined as:
*
* 1) never, if the interval is 0, or at
* 2) recalculationInterval + lastCalculationTime, if lastCalculationTime is NOT 0 (i.e. the group has been calculated at least once before), or at
* 3) modifiedTime + lastCalculationTime, if the group has never been calculated once yet
*/
@NamedQuery(name = GroupDefinition.QUERY_FIND_IDS_FOR_RECALCULATION, query = "" //
+ " SELECT gd.id " //
+ " FROM GroupDefinition gd " //
+ " WHERE gd.recalculationInterval != 0 " //
+ " AND ( ( gd.lastCalculationTime IS NOT NULL " //
+ " AND ( gd.lastCalculationTime + gd.recalculationInterval < :now ) ) " //
+ " OR " //
+ " ( gd.lastCalculationTime IS NULL " //
+ " AND ( gd.modifiedTime + gd.recalculationInterval < :now ) ) ) "), //
@NamedQuery(name = GroupDefinition.QUERY_FIND_ALL_RECALCULATING, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd " //
+ " WHERE gd.recalculationInterval != 0 "),
@NamedQuery(name = GroupDefinition.QUERY_FIND_BY_CANNED_EXPR_NAME, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd " //
+ " WHERE gd.cannedExpression = :cannedExpression"),
@NamedQuery(name = GroupDefinition.QUERY_FIND_CREATED_FROM_CANNED_EXPR, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd " //
+ " WHERE gd.cannedExpression IS NOT NULL"),
@NamedQuery(name = GroupDefinition.QUERY_FIND_LIKE_EXPR_NAME, query = "" //
+ "SELECT gd " //
+ " FROM GroupDefinition AS gd " //
+ " WHERE gd.cannedExpression LIKE :cannedExpression")})
@SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_GROUP_DEF_ID_SEQ", sequenceName = "RHQ_GROUP_DEF_ID_SEQ")
@Table(name = "RHQ_GROUP_DEF")
public class GroupDefinition implements Serializable {
private static final long serialVersionUID = 1L;
public static final String QUERY_FIND_ALL = "GroupDefinition.findAll";
public static final String QUERY_FIND_BY_NAME = "GroupDefinition.findByName";
public static final String QUERY_FIND_MEMBERS = "GroupDefinition.findMembers";
public static final String QUERY_FIND_ALL_MEMBERS = "GroupDefinition.findAllMembers_admin";
public static final String QUERY_FIND_MANAGED_RESOURCE_GROUP_IDS_ADMIN = "GroupDefinition.findManagedResourceGroupIds_admin";
public static final String QUERY_FIND_MANAGED_RESOURCE_GROUP_SIZE_ADMIN = "GroupDefinition.findManagedResourceGroupSize_admin";
public static final String QUERY_FIND_IDS_FOR_RECALCULATION = "GroupDefinition.findIdsForRecalculation_admin";
public static final String QUERY_FIND_ALL_RECALCULATING = "GroupDefinition.findAllRecalculating_admin";
public static final String QUERY_FIND_BY_CANNED_EXPR_NAME = "GroupDefinition.findByCannedExpessionName";
public static final String QUERY_FIND_CREATED_FROM_CANNED_EXPR = "GroupDefinition.findCreatedFromCannedExpression";
public static final String QUERY_FIND_LIKE_EXPR_NAME = "GroupDefinition.findLikeCannedExpressionName";
@Column(name = "ID", nullable = false)
@GeneratedValue(strategy = GenerationType.AUTO, generator = "RHQ_GROUP_DEF_ID_SEQ")
@Id
private int id;
@Column(name = "NAME", nullable = false)
private String name;
@Column(name = "DESCRIPTION")
private String description;
@Column(name = "RECURSIVE")
private boolean recursive;
@Column(name = "CTIME")
private Long createdTime;
@Column(name = "MTIME")
private Long modifiedTime;
@Column(name = "CALC_TIME")
private Long lastCalculationTime;
@Column(name = "CALC_INTERVAL")
private long recalculationInterval;
@Column(name = "EXPRESSION")
private String expression;
@Column(name = "CANNED_EXPRESSION")
private String cannedExpression;
@OneToMany(mappedBy = "groupDefinition", cascade = { CascadeType.PERSIST })
private Set<ResourceGroup> managedResourceGroups;
/* no-arg constructor required by EJB spec */
public GroupDefinition() {
}
public GroupDefinition(String name) {
this.name = name;
}
@Override
public String toString() {
return "GroupDefinition" + "[" + "id=" + getId() + ", " + "name=" + getName() + "]";
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public boolean isRecursive() {
return recursive;
}
public void setRecursive(boolean recursive) {
this.recursive = recursive;
}
public Long getCreatedTime() {
return createdTime;
}
public void setCreatedTime(Long ctime) {
this.createdTime = ctime;
}
public Long getModifiedTime() {
return modifiedTime;
}
public void setModifiedTime(Long mtime) {
this.modifiedTime = mtime;
}
@PrePersist
void onPersist() {
this.modifiedTime = this.createdTime = System.currentTimeMillis();
}
@PreUpdate
void onUpdate() {
this.modifiedTime = System.currentTimeMillis();
}
public Long getLastCalculationTime() {
return lastCalculationTime;
}
public void setLastCalculationTime(Long lastCalculationTime) {
this.lastCalculationTime = lastCalculationTime;
}
public Long getRecalculationInterval() {
return recalculationInterval;
}
public void setRecalculationInterval(Long recalculationInterval) {
this.recalculationInterval = recalculationInterval;
}
public Long getNextCalculationTime() {
Long ri = getRecalculationInterval();
if (ri == null || ri == 0) {
return 0L; // never recalculate
} else {
if (getLastCalculationTime() != null) {
return getLastCalculationTime() + ri;
} else {
// interval millis after the user saves the changes to the group, to prevent flooding
Long mt = getModifiedTime();
return ((mt != null) ? mt.longValue() : System.currentTimeMillis()) + ri.longValue();
}
}
}
public String getExpression() {
return expression;
}
public List<String> getExpressionAsList() {
/*
* should never be empty tokens, but if we return all tokens now (including empty ones) the business logic
* should remove the empty tokens when the user saves this definition
*/
return StringUtils.getStringAsList(expression, "\n", false);
}
public void setExpression(String expression) {
this.expression = expression;
}
public Set<ResourceGroup> getManagedResourceGroups() {
return managedResourceGroups;
}
public void addResourceGroup(ResourceGroup resourceGroup) {
if (this.managedResourceGroups == null) {
this.managedResourceGroups = new HashSet<ResourceGroup>();
}
this.managedResourceGroups.add(resourceGroup);
resourceGroup.setGroupDefinition(this);
}
public void removeResourceGroup(ResourceGroup resourceGroup) {
if (this.managedResourceGroups == null) {
return;
}
this.managedResourceGroups.remove(resourceGroup);
resourceGroup.setGroupDefinition(null);
}
public void setManagedResourceGroups(Set<ResourceGroup> managedResourceGroups) {
this.managedResourceGroups = managedResourceGroups;
}
public void setCannedExpression(String cannedExpression) {
this.cannedExpression = cannedExpression;
}
public String getCannedExpression() {
return cannedExpression;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = (prime * result) + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if ((obj == null) || (!(obj instanceof GroupDefinition))) {
return false;
}
final GroupDefinition other = (GroupDefinition) obj;
if (name == null) {
if (other.name != null) {
return false;
}
} else if (!name.equals(other.name)) {
return false;
}
return true;
}
}