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...h/extension-jberet/src/main/java/org/wildfly/extension/batch/jberet/AttributeParsers.java
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| /* | ||
| * Copyright 2016 Red Hat, Inc. | ||
| * | ||
| * 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.extension.batch.jberet; | ||
|
|
||
| import java.util.EnumMap; | ||
| import java.util.EnumSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
| import javax.xml.stream.XMLStreamException; | ||
|
|
||
| import org.jboss.as.controller.AttributeDefinition; | ||
| import org.jboss.as.controller.AttributeParser; | ||
| import org.jboss.as.controller.parsing.ParseUtils; | ||
| import org.jboss.dmr.ModelNode; | ||
| import org.jboss.staxmapper.XMLExtendedStreamReader; | ||
|
|
||
| /** | ||
| * Attribute parsing utilities. | ||
| * | ||
| * @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a> | ||
| */ | ||
| class AttributeParsers { | ||
|
|
||
| /** | ||
| * An attribute parser for elements with a single {@code value} that don't allow any content within the element. | ||
| */ | ||
| static final AttributeParser VALUE = new AttributeParser() { | ||
| @Override | ||
| public void parseElement(final AttributeDefinition attribute, final XMLExtendedStreamReader reader, final ModelNode operation) throws XMLStreamException { | ||
| operation.get(attribute.getName()).set(readValueAttribute(reader)); | ||
| ParseUtils.requireNoContent(reader); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isParseAsElement() { | ||
| return true; | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * Reads a {@code name} attribute on an element. | ||
| * | ||
| * @param reader the reader used to read the attribute with | ||
| * | ||
| * @return the name attribute or {@code null} if the name attribute was not defined | ||
| * | ||
| * @throws XMLStreamException if an XML processing error occurs | ||
| */ | ||
| static String readNameAttribute(final XMLExtendedStreamReader reader) throws XMLStreamException { | ||
| return readRequiredAttributes(reader, EnumSet.of(Attribute.NAME)).get(Attribute.NAME); | ||
| } | ||
|
|
||
| /** | ||
| * Reads a {@code value} attribute on an element. | ||
| * | ||
| * @param reader the reader used to read the attribute with | ||
| * | ||
| * @return the value attribute or {@code null} if the value attribute was not defined | ||
| * | ||
| * @throws XMLStreamException if an XML processing error occurs | ||
| */ | ||
| static String readValueAttribute(final XMLExtendedStreamReader reader) throws XMLStreamException { | ||
| return readRequiredAttributes(reader, EnumSet.of(Attribute.VALUE)).get(Attribute.VALUE); | ||
| } | ||
|
|
||
| /** | ||
| * Reads the required attributes from an XML configuration. | ||
| * <p> | ||
| * The reader must be on an element with attributes. | ||
| * </p> | ||
| * | ||
| * @param reader the reader for the attributes | ||
| * @param attributes the required attributes | ||
| * | ||
| * @return a map of the required attributes with the key being the attribute and the value being the value of the | ||
| * attribute | ||
| * | ||
| * @throws XMLStreamException if an XML processing error occurs | ||
| */ | ||
| static Map<Attribute, String> readRequiredAttributes(final XMLExtendedStreamReader reader, final Set<Attribute> attributes) throws XMLStreamException { | ||
| final int attributeCount = reader.getAttributeCount(); | ||
| final Map<Attribute, String> result = new EnumMap<>(Attribute.class); | ||
| for (int i = 0; i < attributeCount; i++) { | ||
| final Attribute current = Attribute.forName(reader.getAttributeLocalName(i)); | ||
| if (attributes.contains(current)) { | ||
| if (result.put(current, reader.getAttributeValue(i)) != null) { | ||
| throw ParseUtils.duplicateAttribute(reader, current.getLocalName()); | ||
| } | ||
| } else { | ||
| throw ParseUtils.unexpectedAttribute(reader, i, attributes.stream().map(Attribute::getLocalName).collect(Collectors.toSet())); | ||
| } | ||
| } | ||
| if (result.isEmpty()) { | ||
| throw ParseUtils.missingRequired(reader, attributes.stream().map(Attribute::getLocalName).collect(Collectors.toSet())); | ||
| } | ||
| return result; | ||
| } | ||
| } |
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