/*
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.wso2.carbon.event.publisher.core.internal.type.text;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.wso2.carbon.event.publisher.core.config.EventPublisherConstants;
import org.wso2.carbon.event.publisher.core.config.OutputMapping;
import org.wso2.carbon.event.publisher.core.config.mapping.TextOutputMapping;
import org.wso2.carbon.event.publisher.core.exception.EventPublisherConfigurationException;
import org.wso2.carbon.event.publisher.core.exception.EventPublisherValidationException;
import javax.xml.namespace.QName;
import java.util.Iterator;
/**
* This class is used to read the values of the event builder configuration defined in XML configuration files
*/
public class TextOutputMapperConfigurationBuilder {
private TextOutputMapperConfigurationBuilder() {
}
public static OutputMapping fromOM(
OMElement mappingElement)
throws EventPublisherValidationException, EventPublisherConfigurationException {
TextOutputMapping textOutputMapping = new TextOutputMapping();
String customMappingEnabled = mappingElement.getAttributeValue(new QName(EventPublisherConstants.EF_ATTR_CUSTOM_MAPPING));
if (customMappingEnabled == null || (customMappingEnabled.equals(EventPublisherConstants.ENABLE_CONST))) {
textOutputMapping.setCustomMappingEnabled(true);
if (!validateTextMapping(mappingElement)) {
throw new EventPublisherConfigurationException("Text Mapping is not valid, check the output mapping");
}
OMElement innerMappingElement = mappingElement.getFirstChildWithName(
new QName(EventPublisherConstants.EF_CONF_NS, EventPublisherConstants.EF_ELE_MAPPING_INLINE));
if (innerMappingElement != null) {
textOutputMapping.setRegistryResource(false);
} else {
innerMappingElement = mappingElement.getFirstChildWithName(
new QName(EventPublisherConstants.EF_CONF_NS, EventPublisherConstants.EF_ELE_MAPPING_REGISTRY));
if (innerMappingElement != null) {
textOutputMapping.setRegistryResource(true);
String cacheTimeoutDurationValue = innerMappingElement.getAttributeValue(QName.valueOf(EventPublisherConstants.EF_ELE_CACHE_TIMEOUT_DURATION));
if (cacheTimeoutDurationValue == null || cacheTimeoutDurationValue.isEmpty()) {
textOutputMapping.setCacheTimeoutDuration(0);
} else {
textOutputMapping.setCacheTimeoutDuration(Long.parseLong(cacheTimeoutDurationValue));
}
} else {
throw new EventPublisherConfigurationException("Text Mapping is not valid, Mapping should be inline or from registry");
}
}
if (innerMappingElement.getText() == null || innerMappingElement.getText().trim().isEmpty()) {
throw new EventPublisherConfigurationException("No mapping content available");
} else {
textOutputMapping.setMappingText(innerMappingElement.getText());
}
} else {
textOutputMapping.setCustomMappingEnabled(false);
}
return textOutputMapping;
}
public static boolean validateTextMapping(OMElement omElement) {
int count = 0;
Iterator<OMElement> mappingIterator = omElement.getChildElements();
while (mappingIterator.hasNext()) {
count++;
mappingIterator.next();
}
return count != 0;
}
public static OMElement outputMappingToOM(
OutputMapping outputMapping, OMFactory factory) {
TextOutputMapping textOutputMapping = (TextOutputMapping) outputMapping;
OMElement mappingOMElement = factory.createOMElement(new QName(
EventPublisherConstants.EF_ELEMENT_MAPPING));
mappingOMElement.declareDefaultNamespace(EventPublisherConstants.EF_CONF_NS);
mappingOMElement.addAttribute(EventPublisherConstants.EF_ATTR_TYPE, EventPublisherConstants.EF_TEXT_MAPPING_TYPE, null);
if (textOutputMapping.isCustomMappingEnabled()) {
mappingOMElement.addAttribute(EventPublisherConstants.EF_ATTR_CUSTOM_MAPPING, EventPublisherConstants.ENABLE_CONST, null);
OMElement innerMappingElement;
if (textOutputMapping.isRegistryResource()) {
innerMappingElement = factory.createOMElement(new QName(
EventPublisherConstants.EF_ELE_MAPPING_REGISTRY));
innerMappingElement.declareDefaultNamespace(EventPublisherConstants.EF_CONF_NS);
// Cache timeout of registry resource
innerMappingElement.addAttribute(EventPublisherConstants.EF_ELE_CACHE_TIMEOUT_DURATION, Long.toString(textOutputMapping.getCacheTimeoutDuration()), null);
} else {
innerMappingElement = factory.createOMElement(new QName(
EventPublisherConstants.EF_ELE_MAPPING_INLINE));
innerMappingElement.declareDefaultNamespace(EventPublisherConstants.EF_CONF_NS);
}
mappingOMElement.addChild(innerMappingElement);
innerMappingElement.setText(textOutputMapping.getMappingText());
} else {
mappingOMElement.addAttribute(EventPublisherConstants.EF_ATTR_CUSTOM_MAPPING, EventPublisherConstants.TM_VALUE_DISABLE, null);
}
return mappingOMElement;
}
}