org.ow2.opensuit.cel.impl.tree.impl.ast
Class AstEval

java.lang.Object
  org.ow2.opensuit.cel.impl.tree.impl.ast.AstNode
      org.ow2.opensuit.cel.impl.tree.impl.ast.AstEval

All Implemented Interfaces:

IExpression, IExprNode

public final class AstEval
extends AstNode

Field Summary

Fields inherited from class org.ow2.opensuit.cel.impl.tree.impl.ast.AstNode

position

Constructor Summary

AstEval(int position, AstNode child, boolean deferred)

Method Summary

protected void	appendExpressionString(java.lang.StringBuilder b) Recursive method to build an expression string form.
protected void	appendValuePattern(java.lang.StringBuilder b) Recursive method to build the returned values regular expression.
boolean	compile(ITypeConverter converter, ICompilationContext ctx, ICompilationResultWriter messages) Allow to compile the given expression with the associated and .
java.lang.reflect.Type	getGenericType() Returns the expression generic type
java.lang.Class<?>	getType() Returns the expression type
java.lang.Object	invoke(IEvaluationContext context) Evaluates the expression.
boolean	isDeferred()
boolean	isReadOnly() Returns true if the expression cannot be set
boolean	isStaticValue() Returns true if the expression has a static value (i.e. that does not depend on any evaluation context).
void	set(IEvaluationContext context, java.lang.Object value) Assigns a value to this expression (if no read only)

Methods inherited from class org.ow2.opensuit.cel.impl.tree.impl.ast.AstNode

getExpressionString, getPosition, getValuePattern, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

AstEval

public AstEval(int position,
               AstNode child,
               boolean deferred)

Method Detail

compile

public boolean compile(ITypeConverter converter,
                       ICompilationContext ctx,
                       ICompilationResultWriter messages)

Description copied from interface: IExprNode

Allow to compile the given expression with the associated and . All messages will be stored into the at the end of the performed compilation.

Parameters:

converter - Interface for conversion types

ctx - Interface for compilation context

messages - Represent where the messages compilation will be stored

Returns:

isDeferred

public boolean isDeferred()

getGenericType

public java.lang.reflect.Type getGenericType()

Description copied from interface: IExpression

Returns the expression generic type

getType

public java.lang.Class<?> getType()

Description copied from interface: IExpression

Returns the expression type

appendExpressionString

protected void appendExpressionString(java.lang.StringBuilder b)

Description copied from class: AstNode

Recursive method to build an expression string form.

Specified by:

appendExpressionString in class AstNode

appendValuePattern

protected void appendValuePattern(java.lang.StringBuilder b)

Description copied from class: AstNode

Recursive method to build the returned values regular expression. This is used for advanced validation.

Specified by:

appendValuePattern in class AstNode

invoke

public java.lang.Object invoke(IEvaluationContext context)
                        throws java.lang.Exception

Description copied from interface: IExpression

Evaluates the expression.

Throws:

java.lang.Exception

isReadOnly

public boolean isReadOnly()

Description copied from interface: IExpression

Returns true if the expression cannot be set

Returns:

boolean

isStaticValue

public boolean isStaticValue()

Description copied from interface: IExpression

Returns true if the expression has a static value (i.e. that does not depend on any evaluation context). In such a case, the invoke(...) method may be called with a null evaluation context.

Returns:

boolean

set

public void set(IEvaluationContext context,
                java.lang.Object value)
         throws java.lang.Exception

Description copied from interface: IExpression

Assigns a value to this expression (if no read only)

Throws:

java.lang.Exception