/**
* 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.builder;
import java.util.Map;
import org.apache.camel.Expression;
import org.apache.camel.builder.xml.Namespaces;
import org.apache.camel.model.ExpressionNode;
import org.apache.camel.model.language.ExpressionType;
import org.apache.camel.model.language.MethodCallExpression;
import org.apache.camel.model.language.XPathExpression;
import org.apache.camel.model.language.XQueryExpression;
/**
* Represents an expression clause within the DSL which when the expression is complete
* the clause continues to another part of the DSL
*
* @version $Revision: 700514 $
*/
public class ExpressionClause<T> extends ExpressionType {
private T result;
private String language;
public ExpressionClause(T result) {
this.result = result;
}
public static <T extends ExpressionNode> ExpressionClause<T> createAndSetExpression(T result) {
ExpressionClause<T> clause = new ExpressionClause<T>(result);
result.setExpression(clause);
return clause;
}
// Helper expressions
//-------------------------------------------------------------------------
/**
* Specify an {@link Expression} instance
*/
public T expression(Expression expression) {
setExpressionValue(expression);
return result;
}
/**
* Specify the constant expression value
*/
public T constant(Object value) {
return expression(ExpressionBuilder.constantExpression(value));
}
/**
* An expression of the exchange
*/
public T exchange() {
return expression(ExpressionBuilder.exchangeExpression());
}
/**
* An expression of an inbound message
*/
public T inMessage() {
return expression(ExpressionBuilder.inMessageExpression());
}
/**
* An expression of an inbound message
*/
public T outMessage() {
return expression(ExpressionBuilder.outMessageExpression());
}
/**
* An expression of an inbound message body
*/
public T body() {
return expression(ExpressionBuilder.bodyExpression());
}
/**
* An expression of an inbound message body converted to the expected type
*/
public T body(Class expectedType) {
return expression(ExpressionBuilder.bodyExpression(expectedType));
}
/**
* An expression of an outbound message body
*/
public T outBody() {
return expression(ExpressionBuilder.outBodyExpression());
}
/**
* An expression of an outbound message body converted to the expected type
*/
public T outBody(Class expectedType) {
return expression(ExpressionBuilder.outBodyExpression(expectedType));
}
/**
* An expression of an inbound message header of the given name
*/
public T header(String name) {
return expression(ExpressionBuilder.headerExpression(name));
}
/**
* An expression of the inbound headers
*/
public T headers() {
return expression(ExpressionBuilder.headersExpression());
}
/**
* An expression of an outbound message header of the given name
*/
public T outHeader(String name) {
return expression(ExpressionBuilder.outHeaderExpression(name));
}
/**
* An expression of the outbound headers
*/
public T outHeaders() {
return expression(ExpressionBuilder.outHeadersExpression());
}
/**
* An expression of an exchange property of the given name
*/
public T property(String name) {
return expression(ExpressionBuilder.propertyExpression(name));
}
/**
* An expression of the exchange properties
*/
public T properties() {
return expression(ExpressionBuilder.propertiesExpression());
}
// Languages
//-------------------------------------------------------------------------
/**
* Evaluates an expression using the
* <a href="http://activemq.apache.org/camel/bean-language.html>bean language</a>
* which basically means the bean is invoked to determine the expression value.
*
* @param bean the name of the bean looked up the registry
* @return the builder to continue processing the DSL
*/
public T method(String bean) {
MethodCallExpression expression = new MethodCallExpression(bean);
setExpressionType(expression);
return result;
}
/**
* Evaluates an expression using the
* <a href="http://activemq.apache.org/camel/bean-language.html>bean language</a>
* which basically means the bean is invoked to determine the expression value.
*
* @param bean the name of the bean looked up the registry
* @param method the name of the method to invoke on the bean
* @return the builder to continue processing the DSL
*/
public T method(String bean, String method) {
MethodCallExpression expression = new MethodCallExpression(bean, method);
setExpressionType(expression);
return result;
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/beanshell.html">BeanShell expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
* @deprecated use language(<tt>"beanshell"</tt>, text). Will be removed in Camel 2.0.
*/
public T beanShell(String text) {
return language("beanshell", text);
}
/**
* Evaluates the <a href="http://activemq.apache.org/camel/el.html">EL Language from JSP and JSF</a>
* using the <a href="http://activemq.apache.org/camel/juel.html">JUEL library</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T el(String text) {
return language("el", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/groovy.html">Groovy expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T groovy(String text) {
return language("groovy", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/java-script.html">JavaScript expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T javaScript(String text) {
return language("js", text);
}
/**
* Evaluates a <a href="http://commons.apache.org/jxpath/">JXPath expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T jxpath(String text) {
return language("jxpath", text);
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/ognl.html">OGNL expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T ognl(String text) {
return language("ognl", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/php.html">PHP expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T php(String text) {
return language("php", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/python.html">Python expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T python(String text) {
return language("python", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/ruby.html">Ruby expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T ruby(String text) {
return language("ruby", text);
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/sql.html">SQL expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T sql(String text) {
return language("sql", text);
}
/**
* Evaluates a <a href="http://activemq.apache.org/camel/simple.html">Simple expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T simple(String text) {
return language("simple", text);
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T xpath(String text) {
return language("xpath", text);
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
* with the specified result type
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expressiopn
* @return the builder to continue processing the DSL
*/
public T xpath(String text, Class resultType) {
XPathExpression expression = new XPathExpression(text);
expression.setResultType(resultType);
setExpressionType(expression);
return result;
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
* with the specified result type and set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expression
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xpath(String text, Class resultType, Namespaces namespaces) {
return xpath(text, resultType, namespaces.getNamespaces());
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
* with the specified result type and set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expression
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xpath(String text, Class resultType, Map<String, String> namespaces) {
XPathExpression expression = new XPathExpression(text);
expression.setResultType(resultType);
expression.setNamespaces(namespaces);
setExpressionType(expression);
return result;
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
* with the specified set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xpath(String text, Namespaces namespaces) {
return xpath(text, namespaces.getNamespaces());
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xpath.html">XPath expression</a>
* with the specified set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xpath(String text, Map<String, String> namespaces) {
XPathExpression expression = new XPathExpression(text);
expression.setNamespaces(namespaces);
setExpressionType(expression);
return result;
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
*
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
public T xquery(String text) {
return language("xquery", text);
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
* with the specified result type
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expressiopn
* @return the builder to continue processing the DSL
*/
public T xquery(String text, Class resultType) {
XQueryExpression expression = new XQueryExpression(text);
expression.setResultType(resultType);
setExpressionType(expression);
return result;
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
* with the specified result type and set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expression
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xquery(String text, Class resultType, Namespaces namespaces) {
return xquery(text, resultType, namespaces.getNamespaces());
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
* with the specified result type and set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param resultType the return type expected by the expression
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xquery(String text, Class resultType, Map<String, String> namespaces) {
XQueryExpression expression = new XQueryExpression(text);
expression.setResultType(resultType);
expression.setNamespaces(namespaces);
setExpressionType(expression);
return result;
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
* with the specified set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xquery(String text, Namespaces namespaces) {
return xquery(text, namespaces.getNamespaces());
}
/**
* Evaluates an <a href="http://activemq.apache.org/camel/xquery.html">XQuery expression</a>
* with the specified set of namespace prefixes and URIs
*
* @param text the expression to be evaluated
* @param namespaces the namespace prefix and URIs to use
* @return the builder to continue processing the DSL
*/
public T xquery(String text, Map<String, String> namespaces) {
XQueryExpression expression = new XQueryExpression(text);
expression.setNamespaces(namespaces);
setExpressionType(expression);
return result;
}
/**
* Evaluates a given language name with the expression text
*
* @param language the name of the language
* @param expression the expression in the given language
* @return the builder to continue processing the DSL
*/
public T language(String language, String expression) {
setLanguage(language);
setExpression(expression);
return result;
}
// Properties
//-------------------------------------------------------------------------
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
}