org.apache.camel.language.simple
Class SimpleLanguageSupport

java.lang.Object
  org.apache.camel.language.simple.SimpleLanguageSupport

All Implemented Interfaces:

IsSingleton, Language

Direct Known Subclasses:

FileLanguage, SimpleLanguage

public abstract class SimpleLanguageSupport
extends Object
implements Language, IsSingleton

Abstract base class for Simple languages.

Field Summary

protected static String	GROUP_PATTERN
protected org.apache.commons.logging.Log	log
protected static Pattern	PATTERN
protected static Pattern	RANGE_PATTERN

Constructor Summary

SimpleLanguageSupport()

Method Summary

protected Expression	createComplexConcatExpression(String expression)
protected Expression	createConstantExpression(String expression)
protected Expression	createConstantExpression(String expression, int start, int end)
Expression	createExpression(String expression) Creates an expression based on the given string input
Predicate	createPredicate(String expression) Creates a predicate based on the given string input
protected abstract Expression	createSimpleExpression(String expression, boolean strict) Creates the simple expression based on the extracted content from the ${ } place holders
protected Expression	createSimpleOrConstantExpression(String text)
protected String	ifStartsWithReturnRemainder(String prefix, String text)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.camel.IsSingleton

isSingleton

Field Detail

GROUP_PATTERN

protected static final String GROUP_PATTERN

See Also:

Constant Field Values

PATTERN

protected static final Pattern PATTERN

RANGE_PATTERN

protected static final Pattern RANGE_PATTERN

log

protected final org.apache.commons.logging.Log log

Constructor Detail

SimpleLanguageSupport

public SimpleLanguageSupport()

Method Detail

createPredicate

public Predicate createPredicate(String expression)

Description copied from interface: Language

Creates a predicate based on the given string input

Specified by:

createPredicate in interface Language

Parameters:

expression - the expression

Returns:

the created predicate

createExpression

public Expression createExpression(String expression)

Description copied from interface: Language

Creates an expression based on the given string input

Specified by:

createExpression in interface Language

Parameters:

expression - the expression as a string input

Returns:

the created expression

createComplexConcatExpression

protected Expression createComplexConcatExpression(String expression)

createSimpleOrConstantExpression

protected Expression createSimpleOrConstantExpression(String text)

createConstantExpression

protected Expression createConstantExpression(String expression,
                                              int start,
                                              int end)

createConstantExpression

protected Expression createConstantExpression(String expression)

createSimpleExpression

protected abstract Expression createSimpleExpression(String expression,
                                                     boolean strict)

Creates the simple expression based on the extracted content from the ${ } place holders

Parameters:

expression - the content between ${ and }

strict - whether it is strict mode or not, if strict it will throw a ExpressionIllegalSyntaxException if the expression was not known. Set to false to support constant expressions

Returns:

the expression

ifStartsWithReturnRemainder

protected String ifStartsWithReturnRemainder(String prefix,
                                             String text)