oracle.cabo.share.expl
Class ExpressionParser

java.lang.Object
  |
  +--oracle.cabo.share.expl.ExpressionParser

Direct Known Subclasses:

DataExpressionParser, ELExpressionParser

public abstract class ExpressionParser

extends java.lang.Object

ExpressionParser is the abstraction for parsing expressions and literal values.

Field Summary

static java.lang.String	DATA_EXPRESSION_PARSER_NAME
static java.lang.String	EL_EXPRESSION_PARSER_NAME

Constructor Summary

ExpressionParser()

Method Summary

abstract java.lang.String	getName() gets the name of this bindingParser
abstract boolean	isBinding(ExpressionContext context, java.lang.String attrURI, java.lang.String attrName, java.lang.String attrText)
abstract java.lang.Object	parseExpression(ExpressionContext context, java.lang.String text, java.lang.Class type) Returns the parsed expression as a BoundValue or literal.

Methods inherited from class java.lang.Object

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

Field Detail

EL_EXPRESSION_PARSER_NAME

public static final java.lang.String EL_EXPRESSION_PARSER_NAME

DATA_EXPRESSION_PARSER_NAME

public static final java.lang.String DATA_EXPRESSION_PARSER_NAME

Constructor Detail

ExpressionParser

public ExpressionParser()

Method Detail

parseExpression

public abstract java.lang.Object parseExpression(ExpressionContext context,
                                                 java.lang.String text,
                                                 java.lang.Class type)
                                          throws ExplException

Returns the parsed expression as a BoundValue or literal.

Parameters:

context - the binding context

text - the expression to parse

type - the type of the parsed literal or the return type of the parsed bound value

Returns:

the parsed expression as a BoundValue or literal

isBinding

public abstract boolean isBinding(ExpressionContext context,
                                  java.lang.String attrURI,
                                  java.lang.String attrName,
                                  java.lang.String attrText)

Parameters:

context - the binding context

attrURI - the attribute namespace

attrName - the attribute name

attrText - the attribute string value

Returns:

true if the value for the specified attribute is not a literal and needs to be parsed into a BoundValue by parseExpression(oracle.cabo.share.expl.ExpressionContext, java.lang.String, java.lang.Class).

getName

public abstract java.lang.String getName()

gets the name of this bindingParser