Class ExpressionImpl

java.lang.Object

com.schibsted.spt.data.jslt.impl.ExpressionImpl

All Implemented Interfaces:

Expression

public class ExpressionImpl
extends Object
implements Expression

Wrapper class that translates an external Expression to an ExpressionNode.

Field Summary

Fields

Modifier and Type	Field	Description
private ExpressionNode	actual
private JstlFile[]	fileModules
private Map<String,Function>	functions
private LetExpression[]	lets
private Map<String,Integer>	parameterSlots
private int	stackFrameSize

Constructor Summary

Constructors

Constructor	Description
ExpressionImpl(LetExpression[] lets, Map<String,Function> functions, ExpressionNode actual)

Method Summary

Modifier and Type	Method	Description
com.fasterxml.jackson.databind.JsonNode	apply(com.fasterxml.jackson.databind.JsonNode input)	Evaluate the expression on the given JSON input.
com.fasterxml.jackson.databind.JsonNode	apply(Scope scope, com.fasterxml.jackson.databind.JsonNode input)
com.fasterxml.jackson.databind.JsonNode	apply(Map<String, com.fasterxml.jackson.databind.JsonNode> variables, com.fasterxml.jackson.databind.JsonNode input)	Evaluate the expression on the given JSON input, with the given predefined variables set.
void	dump()
void	evaluateLetsOnly(Scope scope, com.fasterxml.jackson.databind.JsonNode input)	This is used to initialize global variables when the ExpressionImpl is a module.
List<ExpressionNode>	getChildren()
Function	getFunction(String name)
int	getStackFrameSize()
boolean	hasBody()
void	optimize()
void	prepare(PreparationContext ctx)
void	setGlobalModules(List<JstlFile> fileModules)
String	toString()

Methods inherited from class Object

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

Field Details

lets

private LetExpression[] lets

functions

private Map<String,Function> functions

actual

private ExpressionNode actual

stackFrameSize

private int stackFrameSize

fileModules

private JstlFile[] fileModules

parameterSlots

private Map<String,Integer> parameterSlots

Constructor Details

ExpressionImpl

public ExpressionImpl(LetExpression[] lets,
 Map<String,Function> functions,
 ExpressionNode actual)

Method Details

getFunction

public Function getFunction(String name)

hasBody

public boolean hasBody()

apply

public com.fasterxml.jackson.databind.JsonNode apply(Map<String, com.fasterxml.jackson.databind.JsonNode> variables,
 com.fasterxml.jackson.databind.JsonNode input)

Description copied from interface: Expression

Evaluate the expression on the given JSON input, with the given predefined variables set.

Specified by:

apply in interface Expression

Parameters:

variables - Variable bindings visible inside the expression.

input - The JSON input to evaluate the expression on.

apply

public com.fasterxml.jackson.databind.JsonNode apply(com.fasterxml.jackson.databind.JsonNode input)

Description copied from interface: Expression

Evaluate the expression on the given JSON input.

Specified by:

apply in interface Expression

Parameters:

input - The JSON input to evaluate the expression on.

apply

public com.fasterxml.jackson.databind.JsonNode apply(Scope scope,
 com.fasterxml.jackson.databind.JsonNode input)

dump

public void dump()

prepare

public void prepare(PreparationContext ctx)

evaluateLetsOnly

public void evaluateLetsOnly(Scope scope,
 com.fasterxml.jackson.databind.JsonNode input)

This is used to initialize global variables when the ExpressionImpl is a module. Called once during compilation. The values are then remembered forever.

optimize

public void optimize()

getChildren

public List<ExpressionNode> getChildren()

toString

public String toString()

Overrides:

toString in class Object

getStackFrameSize

public int getStackFrameSize()

setGlobalModules

public void setGlobalModules(List<JstlFile> fileModules)