com.saxonica.codegen
Class ConcatCompiler

java.lang.Object
  com.saxonica.codegen.ExpressionCompiler
      com.saxonica.codegen.SingletonExpressionCompiler
          com.saxonica.codegen.ConcatCompiler

public class ConcatCompiler
extends SingletonExpressionCompiler

Generate Java code to implement the concat() function

Constructor Summary

ConcatCompiler()

Method Summary

String	compileToCharSequence(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as a CharSequence
String	compileToItem(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as an Item

Methods inherited from class com.saxonica.codegen.SingletonExpressionCompiler

compilePush, compileToEffectiveBooleanValue, compileToIterator

Methods inherited from class com.saxonica.codegen.ExpressionCompiler

compileAsLoop, compileToValueRepresentation

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcatCompiler

public ConcatCompiler()

Method Detail

compileToItem

public String compileToItem(CompilerService compiler,
                            Expression expr)

Description copied from class: ExpressionCompiler

Generate Java code to evaluate the expression as an Item

Specified by:

compileToItem in class ExpressionCompiler

Parameters:

compiler - the compiler service

expr - the expression to be compiled

Returns:

a simple Java expression (usually the name of a variable that has been declared) which will be of class Item, and which will hold the value of the expression at run-time (or hold null, representing an empty sequence).

compileToCharSequence

public String compileToCharSequence(CompilerService compiler,
                                    Expression expr)

Description copied from class: ExpressionCompiler

Generate Java code to evaluate the expression as a CharSequence

Overrides:

compileToCharSequence in class SingletonExpressionCompiler

Parameters:

compiler - the compiler service

expr - the XPath expression to be compiled

Returns:

a simple Java expression (usually the name of a variable that has been declared, or a string literal) which will be of class CharSequence, and which will hold the string value of the XPath expression at run-time