org.wildfly.client.config.SelectingXMLStreamReader Maven / Gradle / Ivy
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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).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2015 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.client.config;
import java.util.NoSuchElementException;
import java.util.Set;
/**
* @author David M. Lloyd
*/
class SelectingXMLStreamReader extends AbstractDelegatingXMLStreamReader {
private final Set namespaces;
private int state;
private int level;
private static final int ST_SEEKING = 0;
private static final int ST_FOUND_PRE = 1;
private static final int ST_FOUND = 2;
private static final int ST_DONE = 3;
SelectingXMLStreamReader(final boolean closeDelegate, final ConfigurationXMLStreamReader delegate, final Set namespaces) {
super(closeDelegate, delegate);
this.namespaces = namespaces;
}
public boolean hasNext() throws ConfigXMLParseException {
switch (state) {
case ST_SEEKING: {
while (super.hasNext()) {
final int next = super.next();
switch (next) {
case START_ELEMENT: {
if (namespaces.contains(super.getNamespaceURI())) {
state = ST_FOUND_PRE;
return true;
} else {
getDelegate().skipContent();
}
break;
}
case END_ELEMENT: {
state = ST_DONE;
return false;
}
}
}
return false;
}
case ST_FOUND_PRE: {
return true;
}
case ST_FOUND: {
return super.hasNext();
}
case ST_DONE: {
return false;
}
default: {
throw new IllegalStateException();
}
}
}
public int next() throws ConfigXMLParseException {
if (! hasNext()) throw new NoSuchElementException();
switch (state) {
case ST_FOUND_PRE: {
state = ST_FOUND;
return super.getEventType();
}
case ST_FOUND: {
int next = super.next();
switch (next) {
case START_ELEMENT: {
level ++;
break;
}
case END_ELEMENT: {
if (level-- == 0) {
state = ST_DONE;
}
break;
}
}
return next;
}
default: {
throw new IllegalStateException();
}
}
}
}