org.wildfly.naming.client.SimpleName Maven / Gradle / Ivy
Go to download
This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
The newest version!
/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.naming.client;
import static java.lang.Integer.signum;
import static java.lang.Math.min;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;
import javax.naming.CompoundName;
import javax.naming.InvalidNameException;
import javax.naming.Name;
import org.wildfly.common.Assert;
import org.wildfly.naming.client._private.Messages;
/**
* A simple compound name which uses left-to-right parsing, {@code /} separators, and simple quoting rules. This class
* is designed to perform better and have lower overhead than {@link CompoundName}.
*
* @author David M. Lloyd
*/
public class SimpleName implements Name, Serializable {
private static final long serialVersionUID = - 91630190623885257L;
private final ArrayList segments;
public SimpleName() {
segments = new ArrayList<>();
}
public SimpleName(String name) throws InvalidNameException {
this(parse(name));
}
public SimpleName(final Collection segments) {
this(new ArrayList<>(segments));
}
public SimpleName(final Name name) {
this(name.getAll());
}
private SimpleName(final ArrayList literalSegments) {
for (int i = 0; i < literalSegments.size(); i++) {
if (literalSegments.get(i) == null) {
throw Messages.log.invalidNullSegment(i);
}
}
this.segments = literalSegments;
}
public SimpleName(final Enumeration enumeration) {
this();
if (enumeration.hasMoreElements()) {
final ArrayList segments = this.segments;
int idx = 0;
String item;
do {
item = enumeration.nextElement();
if (item == null) {
throw Messages.log.invalidNullSegment(idx);
}
segments.add(item);
idx ++;
} while (enumeration.hasMoreElements());
}
}
private static ArrayList parse(String name) throws InvalidNameException {
final ArrayList segments = new ArrayList<>();
final int length = name.length();
final StringBuilder b = new StringBuilder();
int ch = -1;
boolean q = false, e = false, sq = false;
for (int i = 0; i < length; i = name.offsetByCodePoints(i, 1)) {
ch = name.codePointAt(i);
if (e) {
e = false;
b.appendCodePoint(ch);
} else if (q) {
if (sq && ch == '\'') {
q = false;
} else if (! sq && ch == '"') {
q = false;
} else if (ch == '\\') {
e = true;
} else {
b.appendCodePoint(ch);
}
} else if (ch == '/') {
segments.add(b.toString());
b.setLength(0);
} else if (ch == '"') {
q = true;
sq = false;
} else if (ch == '\'') {
q = true;
sq = true;
} else if (ch == '\\') {
e = true;
} else {
b.appendCodePoint(ch);
}
}
if (b.length() > 0 || ch == '/') {
segments.add(b.toString());
}
if (q) {
throw Messages.log.missingCloseQuote(sq ? '\'' : '"', name);
} else if (e) {
throw Messages.log.missingEscape(name);
}
return segments;
}
public int compareTo(final Object obj) {
return compareTo((SimpleName) obj);
}
public int compareTo(final SimpleName simpleName) {
int result;
final ArrayList segments = this.segments;
final ArrayList theirSegments = simpleName.segments;
final int theirSize = theirSegments.size();
final int ourSize = segments.size();
for (int i = 0; i < min(ourSize, theirSize); i ++) {
result = segments.get(i).compareTo(theirSegments.get(i));
if (result != 0) {
return result;
}
}
return signum(ourSize - theirSize);
}
public boolean equals(final Object obj) {
return obj != null && obj.getClass() == getClass() && equals((SimpleName) obj);
}
public boolean equals(final SimpleName simpleName) {
return simpleName != null && simpleName.getClass() == getClass() && segments.equals(simpleName.segments);
}
public int hashCode() {
return segments.hashCode();
}
public int size() {
return segments.size();
}
public boolean isEmpty() {
return segments.isEmpty();
}
public Enumeration getAll() {
return Collections.enumeration(segments);
}
public String toString() {
final Iterator iterator = segments.iterator();
if (iterator.hasNext()) {
StringBuilder b = new StringBuilder();
appendSegment(b, iterator.next());
while (iterator.hasNext()) {
b.append('/');
appendSegment(b, iterator.next());
}
return b.toString();
} else {
return "";
}
}
private static void appendSegment(final StringBuilder b, final String segment) {
int cp;
for (int i = 0; i < segment.length(); i = segment.offsetByCodePoints(i, 1)) {
cp = segment.codePointAt(i);
if (cp == '/' || cp == '\'' || cp == '"') {
b.append('\\');
}
b.appendCodePoint(cp);
}
}
public String get(final int pos) {
final ArrayList segments = this.segments;
if (pos < 0 || pos >= segments.size()) {
throw Messages.log.nameIndexOutOfBounds(pos);
}
return segments.get(pos);
}
public Collection getRange(final int start, final int end) {
return segments.subList(start, end);
}
public SimpleName getPrefix(final int pos) {
return new SimpleName(getRange(0, pos));
}
public SimpleName getSuffix(final int pos) {
return new SimpleName(getRange(pos, size()));
}
public boolean startsWith(final Name name) {
final ArrayList segments = this.segments;
final int size = name.size();
if (size > segments.size()) {
return false;
}
for (int i = 0; i < size; i ++) {
if (! segments.get(i).equals(name.get(i))) {
return false;
}
}
return true;
}
public boolean endsWith(final Name name) {
final ArrayList segments = this.segments;
final int size = name.size();
final int ourSize = segments.size();
if (size > ourSize) {
return false;
}
final int offs = ourSize - size;
for (int i = 0; i < size; i ++) {
if (! segments.get(i + offs).equals(name.get(i))) {
return false;
}
}
return true;
}
public SimpleName addAll(final Name suffix) {
if (suffix instanceof SimpleName) {
segments.addAll(((SimpleName) suffix).segments);
return this;
}
final ArrayList segments = this.segments;
final int size = suffix.size();
final int ourSize = segments.size();
segments.ensureCapacity(ourSize + size);
for (int i = 0; i < size; i ++) {
add(suffix.get(i));
}
return this;
}
public SimpleName addAll(final int pos, final Name name) {
if (name instanceof SimpleName) {
segments.addAll(pos, ((SimpleName) name).segments);
return this;
}
final ArrayList segments = this.segments;
final int size = name.size();
final int ourSize = segments.size();
segments.ensureCapacity(ourSize + size);
for (int i = 0; i < size; i ++) {
add(pos + i, name.get(i));
}
return this;
}
public SimpleName add(final String comp) {
Assert.checkNotNullParam("comp", comp);
segments.add(comp);
return this;
}
public SimpleName add(final int pos, final String comp) {
Assert.checkNotNullParam("comp", comp);
segments.add(pos, comp);
return this;
}
public String remove(final int pos) {
return segments.remove(pos);
}
public SimpleName clone() {
return new SimpleName((Collection) segments);
}
public static SimpleName of(final Name name) {
if (name instanceof SimpleName) {
return (SimpleName) name;
}
return new SimpleName(name);
}
}