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The Core Camel Java DSL based router
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.camel.model.dataformat;
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import org.apache.camel.CamelContext;
import org.apache.camel.model.DataFormatDefinition;
import org.apache.camel.spi.DataFormat;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.RouteContext;
import org.apache.camel.util.ObjectHelper;
/**
* YAML data format
*
* @version
*/
@Metadata(firstVersion = "2.17.0", label = "dataformat,transformation,yaml", title = "YAML")
@XmlRootElement(name = "yaml")
@XmlAccessorType(XmlAccessType.FIELD)
public class YAMLDataFormat extends DataFormatDefinition {
@XmlAttribute @Metadata(defaultValue = "SnakeYAML")
private YAMLLibrary library = YAMLLibrary.SnakeYAML;
@XmlTransient
private ClassLoader classLoader;
@XmlTransient
private Class unmarshalType;
@XmlAttribute
private String unmarshalTypeName;
@XmlAttribute
private String constructor;
@XmlAttribute
private String representer;
@XmlAttribute
private String dumperOptions;
@XmlAttribute
private String resolver;
@XmlAttribute @Metadata(defaultValue = "true")
private Boolean useApplicationContextClassLoader = true;
@XmlAttribute @Metadata(defaultValue = "false")
private Boolean prettyFlow = false;
@XmlAttribute @Metadata(defaultValue = "false")
private Boolean allowAnyType = false;
@XmlElement(name = "typeFilter")
private List typeFilters;
public YAMLDataFormat() {
this(YAMLLibrary.SnakeYAML);
}
public YAMLDataFormat(YAMLLibrary library) {
super("yaml-" + library.name().toLowerCase());
this.library = library;
}
public YAMLDataFormat(YAMLLibrary library, Class unmarshalType) {
super("yaml-" + library.name().toLowerCase());
this.library = library;
this.unmarshalType = unmarshalType;
}
public YAMLLibrary getLibrary() {
return library;
}
/**
* Which yaml library to use.
*
* By default it is SnakeYAML
*/
public void setLibrary(YAMLLibrary library) {
this.library = library;
setDataFormatName("yaml-" + library.name().toLowerCase());
}
public Class getUnmarshalType() {
return unmarshalType;
}
/**
* Class of the object to be created
*/
public void setUnmarshalType(Class type) {
this.unmarshalType = type;
}
public String getUnmarshalTypeName() {
return unmarshalTypeName;
}
/**
* Class name of the java type to use when unarmshalling
*/
public void setUnmarshalTypeName(String unmarshalTypeName) {
this.unmarshalTypeName = unmarshalTypeName;
}
public ClassLoader getClassLoader() {
return classLoader;
}
/**
* Set a custom classloader
*/
public void setClassLoader(ClassLoader classLoader) {
this.classLoader = classLoader;
}
public String getConstructor() {
return constructor;
}
/**
* BaseConstructor to construct incoming documents.
*/
public void setConstructor(String constructor) {
this.constructor = constructor;
}
public String getRepresenter() {
return representer;
}
/**
* Representer to emit outgoing objects.
*/
public void setRepresenter(String representer) {
this.representer = representer;
}
public String getDumperOptions() {
return dumperOptions;
}
/**
* DumperOptions to configure outgoing objects.
*/
public void setDumperOptions(String dumperOptions) {
this.dumperOptions = dumperOptions;
}
public String getResolver() {
return resolver;
}
/**
* Resolver to detect implicit type
*/
public void setResolver(String resolver) {
this.resolver = resolver;
}
public boolean isUseApplicationContextClassLoader() {
return useApplicationContextClassLoader;
}
/**
* Use ApplicationContextClassLoader as custom ClassLoader
*/
public void setUseApplicationContextClassLoader(boolean useApplicationContextClassLoader) {
this.useApplicationContextClassLoader = useApplicationContextClassLoader;
}
public boolean isPrettyFlow() {
return prettyFlow;
}
/**
* Force the emitter to produce a pretty YAML document when using the flow
* style.
*/
public void setPrettyFlow(boolean prettyFlow) {
this.prettyFlow = prettyFlow;
}
public boolean isAllowAnyType() {
return allowAnyType;
}
/**
* Allow any class to be un-marshaled
*/
public void setAllowAnyType(boolean allowAnyType) {
this.allowAnyType = allowAnyType;
}
public List getTypeFilters() {
return typeFilters;
}
/**
* Set the types SnakeYAML is allowed to un-marshall
*/
public void setTypeFilters(List typeFilters) {
this.typeFilters = typeFilters;
}
@Override
protected DataFormat createDataFormat(RouteContext routeContext) {
if (library == YAMLLibrary.SnakeYAML) {
setProperty(routeContext.getCamelContext(), this, "dataFormatName", "yaml-snakeyaml");
}
return super.createDataFormat(routeContext);
}
@Override
protected void configureDataFormat(DataFormat dataFormat, CamelContext camelContext) {
if (library == YAMLLibrary.SnakeYAML) {
configureSnakeDataFormat(dataFormat, camelContext);
}
}
protected void configureSnakeDataFormat(DataFormat dataFormat, CamelContext camelContext) {
Class yamlUnmarshalType = unmarshalType;
if (yamlUnmarshalType == null && unmarshalTypeName != null) {
try {
yamlUnmarshalType = camelContext.getClassResolver().resolveMandatoryClass(unmarshalTypeName);
} catch (ClassNotFoundException e) {
throw ObjectHelper.wrapRuntimeCamelException(e);
}
}
setProperty(dataFormat, camelContext, "unmarshalType", yamlUnmarshalType);
setProperty(dataFormat, camelContext, "classLoader", classLoader);
setProperty(dataFormat, camelContext, "useApplicationContextClassLoader", useApplicationContextClassLoader);
setProperty(dataFormat, camelContext, "prettyFlow", prettyFlow);
setProperty(dataFormat, camelContext, "allowAnyType", allowAnyType);
if (typeFilters != null && !typeFilters.isEmpty()) {
List typeFilterDefinitions = new ArrayList<>(typeFilters.size());
for (YAMLTypeFilterDefinition definition : typeFilters) {
String value = definition.getValue();
if (!value.startsWith("type") && !value.startsWith("regexp")) {
YAMLTypeFilterType type = definition.getType();
if (type == null) {
type = YAMLTypeFilterType.type;
}
value = type.name() + ":" + value;
}
typeFilterDefinitions.add(value);
}
setProperty(dataFormat, camelContext, "typeFilterDefinitions", typeFilterDefinitions);
}
setPropertyRef(dataFormat, camelContext, "constructor", constructor);
setPropertyRef(dataFormat, camelContext, "representer", representer);
setPropertyRef(dataFormat, camelContext, "dumperOptions", dumperOptions);
setPropertyRef(dataFormat, camelContext, "resolver", resolver);
}
protected void setProperty(DataFormat dataFormat, CamelContext camelContext, String propertyName, Object propertyValue) {
if (ObjectHelper.isNotEmpty(propertyValue)) {
setProperty(camelContext, dataFormat, propertyName, propertyValue);
}
}
protected void setPropertyRef(DataFormat dataFormat, CamelContext camelContext, String propertyName, String propertyValue) {
if (ObjectHelper.isNotEmpty(propertyValue)) {
// must be a reference value
String ref = propertyValue.startsWith("#") ? propertyValue : "#" + propertyValue;
setProperty(camelContext, dataFormat, propertyName, ref);
}
}
}