org.apache.camel

Interface Expression

All Known Implementing Classes:

AssertionClause.PredicateValueBuilder, BeanExpression, ConstantExpression, DefaultServiceCallExpression, DirectVmConsumerExpression, ELExpression, ExchangePropertyExpression, ExpressionAdapter, ExpressionAdapter, ExpressionClause, ExpressionDefinition, ExpressionSupport, ExpressionSupport, GroovyExpression, HeaderExpression, JavaScriptExpression, JsonPathExpression, JXPathExpression, LanguageExpression, MethodCallExpression, MvelExpression, NamespaceAwareExpression, OgnlExpression, PhpExpression, PredicateToExpressionAdapter, PythonExpression, RefExpression, RubyExpression, ServiceCallExpressionSupport, SimpleBuilder, SimpleExpression, SpELExpression, SqlExpression, TerserExpression, TokenizerExpression, TokenPairExpressionIterator, TokenXMLExpressionIterator, TokenXMLPairExpressionIterator, ValueBuilder, XMLTokenExpressionIterator, XMLTokenizerExpression, XPathBuilder, XPathExpression, XQueryExpression

public interface Expression

An expression provides a plugin strategy for evaluating expressions on a message exchange to support things like scripting languages, XQuery or SQL as well as any arbitrary Java expression.

Version:

Method Summary

Modifier and Type	Method and Description
<T> T	evaluate(Exchange exchange, Class<T> type) Returns the value of the expression on the given exchange

Method Detail

evaluate

<T> T evaluate(Exchange exchange,
               Class<T> type)

Returns the value of the expression on the given exchange

Parameters:

exchange - the message exchange on which to evaluate the expression

type - the expected type of the evaluation result

Returns:

the value of the expression