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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.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
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 javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
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.CamelContextHelper;
import org.apache.camel.util.CollectionStringBuffer;
import org.apache.camel.util.ObjectHelper;
/**
* XSTream data format is used for unmarshal a XML payload to POJO or to marshal POJO back to XML payload.
*
* @version
*/
@Metadata(firstVersion = "1.3.0", label = "dataformat,transformation,xml,json", title = "XStream")
@XmlRootElement(name = "xstream")
@XmlAccessorType(XmlAccessType.NONE)
public class XStreamDataFormat extends DataFormatDefinition {
@XmlAttribute
private String permissions;
@XmlAttribute
private String encoding;
@XmlAttribute
private String driver;
@XmlAttribute
private String driverRef;
@XmlAttribute
private String mode;
@XmlJavaTypeAdapter(ConvertersAdapter.class)
@XmlElement(name = "converters")
private List converters;
@XmlJavaTypeAdapter(AliasAdapter.class)
@XmlElement(name = "aliases")
private Map aliases;
@XmlJavaTypeAdapter(OmitFieldsAdapter.class)
@XmlElement(name = "omitFields")
private Map omitFields;
@XmlJavaTypeAdapter(ImplicitCollectionsAdapter.class)
@XmlElement(name = "implicitCollections")
private Map implicitCollections;
public XStreamDataFormat() {
super("xstream");
}
public XStreamDataFormat(String encoding) {
this();
setEncoding(encoding);
}
public String getEncoding() {
return encoding;
}
/**
* Sets the encoding to use
*/
public void setEncoding(String encoding) {
this.encoding = encoding;
}
public String getDriver() {
return driver;
}
/**
* To use a custom XStream driver.
* The instance must be of type com.thoughtworks.xstream.io.HierarchicalStreamDriver
*/
public void setDriver(String driver) {
this.driver = driver;
}
public String getDriverRef() {
return driverRef;
}
/**
* To refer to a custom XStream driver to lookup in the registry.
* The instance must be of type com.thoughtworks.xstream.io.HierarchicalStreamDriver
*/
public void setDriverRef(String driverRef) {
this.driverRef = driverRef;
}
public String getMode() {
return mode;
}
/**
* Mode for dealing with duplicate references The possible values are:
*
* - NO_REFERENCES
* - ID_REFERENCES
* - XPATH_RELATIVE_REFERENCES
* - XPATH_ABSOLUTE_REFERENCES
* - SINGLE_NODE_XPATH_RELATIVE_REFERENCES
* - SINGLE_NODE_XPATH_ABSOLUTE_REFERENCES
*
*/
public void setMode(String mode) {
this.mode = mode;
}
public List getConverters() {
return converters;
}
/**
* List of class names for using custom XStream converters.
* The classes must be of type com.thoughtworks.xstream.converters.Converter
*/
public void setConverters(List converters) {
this.converters = converters;
}
public Map getAliases() {
return aliases;
}
/**
* Alias a Class to a shorter name to be used in XML elements.
*/
public void setAliases(Map aliases) {
this.aliases = aliases;
}
public Map getOmitFields() {
return omitFields;
}
/**
* Prevents a field from being serialized. To omit a field you must always provide the
* declaring type and not necessarily the type that is converted.
*/
public void setOmitFields(Map omitFields) {
this.omitFields = omitFields;
}
public Map getImplicitCollections() {
return implicitCollections;
}
/**
* Adds a default implicit collection which is used for any unmapped XML tag.
*/
public void setImplicitCollections(Map implicitCollections) {
this.implicitCollections = implicitCollections;
}
public String getPermissions() {
return permissions;
}
/**
* Adds permissions that controls which Java packages and classes XStream is allowed to use during
* unmarshal from xml/json to Java beans.
*
* A permission must be configured either here or globally using a JVM system property. The permission
* can be specified in a syntax where a plus sign is allow, and minus sign is deny.
*
* Wildcards is supported by using .* as prefix. For example to allow com.foo and all subpackages
* then specfy +com.foo.*. Multiple permissions can be configured separated by comma, such as
* +com.foo.*,-com.foo.bar.MySecretBean.
*
* The following default permission is always included: "-*,java.lang.*,java.util.*" unless
* its overridden by specifying a JVM system property with they key org.apache.camel.xstream.permissions.
*/
public void setPermissions(String permissions) {
this.permissions = permissions;
}
/**
* To add permission for the given pojo classes.
* @param type the pojo class(es) xstream should use as allowed permission
* @see #setPermissions(String)
*/
public void setPermissions(Class... type) {
CollectionStringBuffer csb = new CollectionStringBuffer(",");
for (Class clazz : type) {
csb.append("+");
csb.append(clazz.getName());
}
setPermissions(csb.toString());
}
@Override
protected DataFormat createDataFormat(RouteContext routeContext) {
if ("json".equals(this.driver)) {
setProperty(routeContext.getCamelContext(), this, "dataFormatName", "json-xstream");
}
DataFormat answer = super.createDataFormat(routeContext);
// need to lookup the reference for the xstreamDriver
if (ObjectHelper.isNotEmpty(driverRef)) {
setProperty(routeContext.getCamelContext(), answer, "xstreamDriver", CamelContextHelper.mandatoryLookup(routeContext.getCamelContext(), driverRef));
}
return answer;
}
@Override
protected void configureDataFormat(DataFormat dataFormat, CamelContext camelContext) {
if (this.permissions != null) {
setProperty(camelContext, dataFormat, "permissions", this.permissions);
}
if (encoding != null) {
setProperty(camelContext, dataFormat, "encoding", encoding);
}
if (this.converters != null) {
setProperty(camelContext, dataFormat, "converters", this.converters);
}
if (this.aliases != null) {
setProperty(camelContext, dataFormat, "aliases", this.aliases);
}
if (this.omitFields != null) {
setProperty(camelContext, dataFormat, "omitFields", this.omitFields);
}
if (this.implicitCollections != null) {
setProperty(camelContext, dataFormat, "implicitCollections", this.implicitCollections);
}
if (this.mode != null) {
setProperty(camelContext, dataFormat, "mode", mode);
}
}
@XmlTransient
public static class ConvertersAdapter extends XmlAdapter> {
@Override
public ConverterList marshal(List v) throws Exception {
if (v == null) {
return null;
}
List list = new ArrayList();
for (String str : v) {
ConverterEntry entry = new ConverterEntry();
entry.setClsName(str);
list.add(entry);
}
ConverterList converterList = new ConverterList();
converterList.setList(list);
return converterList;
}
@Override
public List unmarshal(ConverterList v) throws Exception {
if (v == null) {
return null;
}
List list = new ArrayList();
for (ConverterEntry entry : v.getList()) {
list.add(entry.getClsName());
}
return list;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "converterList", namespace = "http://camel.apache.org/schema/spring")
public static class ConverterList {
@XmlElement(name = "converter", namespace = "http://camel.apache.org/schema/spring")
private List list;
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "converterEntry", namespace = "http://camel.apache.org/schema/spring")
public static class ConverterEntry {
@XmlAttribute(name = "class")
private String clsName;
public String getClsName() {
return clsName;
}
public void setClsName(String clsName) {
this.clsName = clsName;
}
}
@XmlTransient
public static class ImplicitCollectionsAdapter
extends XmlAdapter> {
@Override
public ImplicitCollectionList marshal(Map v) throws Exception {
if (v == null || v.isEmpty()) {
return null;
}
List list = new ArrayList();
for (Entry e : v.entrySet()) {
ImplicitCollectionEntry entry = new ImplicitCollectionEntry(e.getKey(), e.getValue());
list.add(entry);
}
ImplicitCollectionList collectionList = new ImplicitCollectionList();
collectionList.setList(list);
return collectionList;
}
@Override
public Map unmarshal(ImplicitCollectionList v) throws Exception {
if (v == null) {
return null;
}
Map map = new HashMap();
for (ImplicitCollectionEntry entry : v.getList()) {
map.put(entry.getClsName(), entry.getFields());
}
return map;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "implicitCollectionList", namespace = "http://camel.apache.org/schema/spring")
public static class ImplicitCollectionList {
@XmlElement(name = "class", namespace = "http://camel.apache.org/schema/spring")
private List list;
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "implicitCollectionEntry", namespace = "http://camel.apache.org/schema/spring")
public static class ImplicitCollectionEntry {
@XmlAttribute(name = "name")
private String clsName;
@XmlElement(name = "field", namespace = "http://camel.apache.org/schema/spring")
private String[] fields;
public ImplicitCollectionEntry() {
}
public ImplicitCollectionEntry(String clsName, String[] fields) {
this.clsName = clsName;
this.fields = fields;
}
public String getClsName() {
return clsName;
}
public void setClsName(String clsName) {
this.clsName = clsName;
}
public String[] getFields() {
return fields;
}
public void setFields(String[] fields) {
this.fields = fields;
}
@Override
public String toString() {
return "Alias[ImplicitCollection=" + clsName + ", fields=" + Arrays.asList(this.fields) + "]";
}
}
@XmlTransient
public static class AliasAdapter extends XmlAdapter> {
@Override
public AliasList marshal(Map value) throws Exception {
if (value == null || value.isEmpty()) {
return null;
}
List ret = new ArrayList(value.size());
for (Map.Entry entry : value.entrySet()) {
ret.add(new AliasEntry(entry.getKey(), entry.getValue()));
}
AliasList jaxbMap = new AliasList();
jaxbMap.setList(ret);
return jaxbMap;
}
@Override
public Map unmarshal(AliasList value) throws Exception {
if (value == null || value.getList() == null || value.getList().isEmpty()) {
return null;
}
Map answer = new HashMap();
for (AliasEntry alias : value.getList()) {
answer.put(alias.getName(), alias.getClsName());
}
return answer;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "aliasList", namespace = "http://camel.apache.org/schema/spring")
public static class AliasList {
@XmlElement(name = "alias", namespace = "http://camel.apache.org/schema/spring")
private List list;
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "aliasEntry", namespace = "http://camel.apache.org/schema/spring")
public static class AliasEntry {
@XmlAttribute
private String name;
@XmlAttribute(name = "class")
private String clsName;
public AliasEntry() {
}
public AliasEntry(String key, String clsName) {
this.name = key;
this.clsName = clsName;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getClsName() {
return clsName;
}
public void setClsName(String clsName) {
this.clsName = clsName;
}
@Override
public String toString() {
return "Alias[name=" + name + ", class=" + clsName + "]";
}
}
@XmlTransient
public static class OmitFieldsAdapter
extends XmlAdapter> {
@Override
public OmitFieldList marshal(Map v) throws Exception {
if (v == null || v.isEmpty()) {
return null;
}
List list = new ArrayList();
for (Entry e : v.entrySet()) {
OmitFieldEntry entry = new OmitFieldEntry(e.getKey(), e.getValue());
list.add(entry);
}
OmitFieldList collectionList = new OmitFieldList();
collectionList.setList(list);
return collectionList;
}
@Override
public Map unmarshal(OmitFieldList v) throws Exception {
if (v == null || v.getList() == null || v.getList().isEmpty()) {
return null;
}
Map map = new HashMap();
for (OmitFieldEntry entry : v.getList()) {
map.put(entry.getClsName(), entry.getFields());
}
return map;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "omitFieldList", namespace = "http://camel.apache.org/schema/spring")
public static class OmitFieldList {
@XmlElement(name = "omitField", namespace = "http://camel.apache.org/schema/spring")
private List list;
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "omitFieldEntry", namespace = "http://camel.apache.org/schema/spring")
public static class OmitFieldEntry {
@XmlAttribute(name = "class")
private String clsName;
@XmlElement(name = "field", namespace = "http://camel.apache.org/schema/spring")
private String[] fields;
public OmitFieldEntry() {
}
public OmitFieldEntry(String clsName, String[] fields) {
this.clsName = clsName;
this.fields = fields;
}
public String getClsName() {
return clsName;
}
public void setClsName(String clsName) {
this.clsName = clsName;
}
public String[] getFields() {
return fields;
}
public void setFields(String[] fields) {
this.fields = fields;
}
@Override
public String toString() {
return "OmitField[" + clsName + ", fields=" + Arrays.asList(this.fields) + "]";
}
}
}