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JAXBContextFactory.java
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134 lines (116 loc) · 4.11 KB
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/*
* Copyright 2014 Netflix, 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 feign.jaxb;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.PropertyException;
import javax.xml.bind.Unmarshaller;
/**
* Creates and caches JAXB contexts as well as creates Marshallers and Unmarshallers for each
* context.
*/
public final class JAXBContextFactory {
private final ConcurrentHashMap<Class, JAXBContext>
jaxbContexts =
new ConcurrentHashMap<Class, JAXBContext>(64);
private final Map<String, Object> properties;
private JAXBContextFactory(Map<String, Object> properties) {
this.properties = properties;
}
/**
* Creates a new {@link javax.xml.bind.Unmarshaller} that handles the supplied class.
*/
public Unmarshaller createUnmarshaller(Class<?> clazz) throws JAXBException {
JAXBContext ctx = getContext(clazz);
return ctx.createUnmarshaller();
}
/**
* Creates a new {@link javax.xml.bind.Marshaller} that handles the supplied class.
*/
public Marshaller createMarshaller(Class<?> clazz) throws JAXBException {
JAXBContext ctx = getContext(clazz);
Marshaller marshaller = ctx.createMarshaller();
setMarshallerProperties(marshaller);
return marshaller;
}
private void setMarshallerProperties(Marshaller marshaller) throws PropertyException {
Iterator<String> keys = properties.keySet().iterator();
while (keys.hasNext()) {
String key = keys.next();
marshaller.setProperty(key, properties.get(key));
}
}
private JAXBContext getContext(Class<?> clazz) throws JAXBException {
JAXBContext jaxbContext = this.jaxbContexts.get(clazz);
if (jaxbContext == null) {
jaxbContext = JAXBContext.newInstance(clazz);
this.jaxbContexts.putIfAbsent(clazz, jaxbContext);
}
return jaxbContext;
}
/**
* Creates instances of {@link feign.jaxb.JAXBContextFactory}
*/
public static class Builder {
private final Map<String, Object> properties = new HashMap<String, Object>(5);
/**
* Sets the jaxb.encoding property of any Marshaller created by this factory.
*/
public Builder withMarshallerJAXBEncoding(String value) {
properties.put(Marshaller.JAXB_ENCODING, value);
return this;
}
/**
* Sets the jaxb.schemaLocation property of any Marshaller created by this factory.
*/
public Builder withMarshallerSchemaLocation(String value) {
properties.put(Marshaller.JAXB_SCHEMA_LOCATION, value);
return this;
}
/**
* Sets the jaxb.noNamespaceSchemaLocation property of any Marshaller created by this factory.
*/
public Builder withMarshallerNoNamespaceSchemaLocation(String value) {
properties.put(Marshaller.JAXB_NO_NAMESPACE_SCHEMA_LOCATION, value);
return this;
}
/**
* Sets the jaxb.formatted.output property of any Marshaller created by this factory.
*/
public Builder withMarshallerFormattedOutput(Boolean value) {
properties.put(Marshaller.JAXB_FORMATTED_OUTPUT, value);
return this;
}
/**
* Sets the jaxb.fragment property of any Marshaller created by this factory.
*/
public Builder withMarshallerFragment(Boolean value) {
properties.put(Marshaller.JAXB_FRAGMENT, value);
return this;
}
/**
* Creates a new {@link feign.jaxb.JAXBContextFactory} instance.
*/
public JAXBContextFactory build() {
return new JAXBContextFactory(properties);
}
}
}