org.modeshape.jcr.query.model.SelectorName Maven / Gradle / Ivy
/*
* ModeShape (http://www.modeshape.org)
*
* 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 org.modeshape.jcr.query.model;
import java.io.Serializable;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Set;
import org.modeshape.common.annotation.Immutable;
import org.modeshape.common.util.CheckArg;
import org.modeshape.jcr.value.NameFactory;
/**
* A representation of a qualified or expanded name.
*/
@Immutable
public class SelectorName implements Readable, Serializable {
private static final long serialVersionUID = 1L;
private final String name;
private final boolean expandedForm;
public SelectorName( String name ) {
CheckArg.isNotEmpty(name, "name");
this.name = name;
this.expandedForm = name.startsWith("{");
}
/**
* The raw name of the selector.
*
* @return the raw name; never null and never empty
*/
public String name() {
return name;
}
/**
* Returns this selector in qualified form (see #3.2.5 of the JCR spec)
*
* @param nameFactory a {@link org.modeshape.jcr.value.NameFactory} instance; may not be null
* @return a {@link org.modeshape.jcr.query.model.SelectorName} instance for which the name is always in qualified form; never null
*/
public SelectorName qualifiedForm(NameFactory nameFactory) {
return expandedForm ? new SelectorName(nameFactory.create(this.name).getString()) : this;
}
@Override
public String getString() {
return name;
}
@Override
public String toString() {
return name;
}
@Override
public int hashCode() {
return this.name.hashCode();
}
@Override
public boolean equals( Object obj ) {
if (obj == this) return true;
if (obj instanceof SelectorName) {
SelectorName that = (SelectorName)obj;
return this.name.equals(that.name());
}
return false;
}
/**
* Create a set that contains the supplied SelectName object.
*
* @param name the name to include in the set; may be null
* @return the set; never null
*/
public static Set nameSetFrom( SelectorName name ) {
if (name == null) return Collections.emptySet();
return Collections.singleton(name);
}
/**
* Create a set that contains the supplied SelectName object.
*
* @param firstName the first name; may be null
* @param names the remaining names; may be null
* @return the set; never null
*/
public static Set nameSetFrom( SelectorName firstName,
SelectorName... names ) {
if (firstName == null && (names == null || names.length == 0)) {
return Collections.emptySet();
}
Set result = new LinkedHashSet();
result.add(firstName);
for (SelectorName name : names) {
if (name != null) result.add(name);
}
return Collections.unmodifiableSet(result);
}
/**
* Create a set that contains the SelectName objects in the supplied sets.
*
* @param firstSet the first set of names; may be null or empty
* @param secondSet the second set of names; may be null or empty
* @return the set; never null
*/
public static Set nameSetFrom( Set firstSet,
Set secondSet ) {
if ((firstSet == null || firstSet.isEmpty()) && (secondSet == null || secondSet.isEmpty())) {
return Collections.emptySet();
}
Set result = new LinkedHashSet();
result.addAll(firstSet);
if (secondSet != null) result.addAll(secondSet);
return Collections.unmodifiableSet(result);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy