com.pega.pegarules.pub.generator
Interface StringExpression

All Superinterfaces:

Expression

public interface StringExpression
extends Expression

The StringExpression interface is provided to facilitate the assembly of String-valued expressions to be used in Java generated for First-Use Assembly.

Version:

$Revision: 31 $ $Date: 2009-06-24 09:38:04 -0400 (Wed, 24 Jun 2009) $

Author:

John van der Meer

Field Summary

static java.lang.String	COPYRIGHT
static java.lang.String	VERSION

Fields inherited from interface com.pega.pegarules.pub.generator.Expression

EXPR_BOOLEAN, EXPR_INTEGER, EXPR_PROPERTY, EXPR_STRING

Method Summary

void	append(StringExpression aOther) Extends this StringExpression with the specified one.
void	appendExpression(java.lang.String aExpression) Extends this StringExpression with the specified Java expression, which is presumed to produce a String value.
void	appendString(java.lang.String aString) Extends this StringExpression with the specified String value.
boolean	isEmpty() Indicates whether this instance represents an empty String.
java.lang.String	toString() Provides the String value represented by this instance if Expression.isLiteral() returns true.

Methods inherited from interface com.pega.pegarules.pub.generator.Expression

addExpression, getType, isExpression, isLiteral

Field Detail

COPYRIGHT

static final java.lang.String COPYRIGHT

See Also:

Constant Field Values

VERSION

static final java.lang.String VERSION

See Also:

Constant Field Values

Method Detail

append

void append(StringExpression aOther)

Extends this StringExpression with the specified one.

Parameters:

aOther - StringExpression to be appended

appendExpression

void appendExpression(java.lang.String aExpression)

Extends this StringExpression with the specified Java expression, which is presumed to produce a String value.

Parameters:

aExpression - Java expression to be appended

appendString

void appendString(java.lang.String aString)

Extends this StringExpression with the specified String value.

Parameters:

aString - String value to be appended

isEmpty

boolean isEmpty()

Indicates whether this instance represents an empty String.

Returns:

true if this instance represents an empty String

toString

java.lang.String toString()

Provides the String value represented by this instance if Expression.isLiteral() returns true.

Overrides:

toString in class java.lang.Object

Returns:

String value of this instance

Throws:

ExpressionException - if this method is called when isLiteral returns false