ExpressionNode (Jadex Active Component Platform 3.0.43 API)

java.lang.Object
- jadex.javaparser.javaccimpl.SimpleNode
- - jadex.javaparser.javaccimpl.ExpressionNode

All Implemented Interfaces:

IParsedExpression, Node, java.io.Serializable

Direct Known Subclasses:

ArgumentsNode, ArrayNode, BooleanNode, CastNode, CollectionNode, CompareNode, ConditionalNode, ConstantNode, MathNode, ParameterNode, ReflectNode, SelectionNode, SelectNode, TypeNode
```
public abstract class ExpressionNode
extends SimpleNode
implements IParsedExpression
```
Base class of expression node hierarchy.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected boolean`	`constant` Is the node value constant (independent of evaluation context and parameters)?
`protected java.lang.Object`	`constant_value` The constant value (if any).
`protected java.lang.String`	`expressiontext` The expression text (if any).
`protected java.lang.String[]`	`imports` The imports (if any).
`protected java.lang.Class`	`static_type` The static type (if any).
`protected java.lang.String`	`text` The token text (if any).

Fields inherited from class jadex.javaparser.javaccimpl.SimpleNode
children, id, parent

Constructor Summary

Constructors
Constructor and Description

ExpressionNode(jadex.javaparser.javaccimpl.ParserImpl p, int id)
Create an expression node.

Constructors
Constructor and Description
`ExpressionNode(jadex.javaparser.javaccimpl.ParserImpl p, int id)` Create an expression node.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`appendText(java.lang.String text)` Append to the token text.
`boolean`	`equals(java.lang.Object o)` Test if two nodes are equal.
`java.lang.Object`	`getConstantValue()` Get the constant value.
`java.lang.String`	`getExpressionText()` Get the full expression text.
`java.util.Set<java.lang.String>`	`getParameters()` Get the parameters used in the expression.
`java.lang.Class<?>`	`getStaticType()` Get the static type.
`java.lang.String`	`getText()` Get the expression text.
`ParameterNode[]`	`getUnboundParameterNodes()` Get unbound parameter nodes.
`abstract java.lang.Object`	`getValue(IValueFetcher fetcher)` Evaluate the expression in the given state with respect to given parameters.
`int`	`hashCode()` Get the hash code for the node.
`boolean`	`isConstant()` Get if the node is constant.
`void`	`precompile()` This method should be overridden to perform all possible checks and precompute all values (e.g.
`void`	`precompileTree()` Precompile this node and all subnodes.
`void`	`setConstant(boolean constant)` Set if the node is constant.
`void`	`setConstantValue(java.lang.Object constant_value)` Set the constant value.
`void`	`setExpressionText(java.lang.String expressiontext)` Get the full expression text.
`void`	`setStaticType(java.lang.Class static_type)` Set the static type.
`void`	`setText(java.lang.String text)` Set the token text.
`protected java.lang.String`	`subnodeToString(int subnode)` Create a string for a subnode.
`protected void`	`throwEvaluationException(java.lang.Throwable ex)` (Re)throw an exception that occured during evaluation and add a useful error message.
`protected void`	`throwParseException(java.lang.Throwable ex)` (Re)throw an exception that occured during parsing and add a useful error message.
`java.lang.String`	`toPlainString()` Create a string representation of this node for dumping in a tree.
`java.lang.String`	`toString()` Create a string representation of this node for dumping in a tree.
`java.lang.String`	`toString(java.lang.String prefix)` Create a string representation of this node for dumping in a tree.

Methods inherited from class jadex.javaparser.javaccimpl.SimpleNode
dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - text
```
protected java.lang.String text
```
    The token text (if any).
  - expressiontext
```
protected java.lang.String expressiontext
```
    The expression text (if any).
  - imports
```
protected java.lang.String[] imports
```
    The imports (if any).
  - static_type
```
protected java.lang.Class static_type
```
    The static type (if any).
  - constant
```
protected boolean constant
```
    Is the node value constant (independent of evaluation context and parameters)?
  - constant_value
```
protected java.lang.Object constant_value
```
    The constant value (if any).
- Constructor Detail
  - ExpressionNode
```
public ExpressionNode(jadex.javaparser.javaccimpl.ParserImpl p,
                      int id)
```
    Create an expression node.
    
    Parameters:
    
    p - The parser.
    
    id - The id.
- Method Detail
  - setExpressionText
```
public void setExpressionText(java.lang.String expressiontext)
```
    Get the full expression text.
    
    Parameters:
    
    text - The expression text.
  - getExpressionText
```
public java.lang.String getExpressionText()
```
    Get the full expression text.
    
    Specified by:
    
    getExpressionText in interface IParsedExpression
    
    Returns:
    
    The expression text.
  - setText
```
public void setText(java.lang.String text)
```
    Set the token text.
    
    Parameters:
    
    text - The token text.
  - appendText
```
public void appendText(java.lang.String text)
```
    Append to the token text.
    
    Parameters:
    
    text - The text to append.
  - setStaticType
```
public void setStaticType(java.lang.Class static_type)
```
    Set the static type.
    
    Parameters:
    
    static_type - The static type.
  - setConstantValue
```
public void setConstantValue(java.lang.Object constant_value)
```
    Set the constant value.
    
    Parameters:
    
    constant_value - The constant value.
  - getConstantValue
```
public java.lang.Object getConstantValue()
```
    Get the constant value. The constant value of a node may be known, when it is independent of the evaluation context, and the child nodes are constant, too.
    
    Returns:
    
    The constant value.
  - setConstant
```
public void setConstant(boolean constant)
```
    Set if the node is constant.
    
    Parameters:
    
    constant - The constant.
  - isConstant
```
public boolean isConstant()
```
    Get if the node is constant. The node is constant, when it is independent of the evaluation context, and the child nodes are constant, too.
    
    Returns:
    
    The constant flag.
  - toString
```
public java.lang.String toString(java.lang.String prefix)
```
    Create a string representation of this node for dumping in a tree.
    
    Overrides:
    
    toString in class SimpleNode
    
    Returns:
    
    A string representation of this node.
  - toPlainString
```
public java.lang.String toPlainString()
```
    Create a string representation of this node for dumping in a tree.
    
    Specified by:
    
    toPlainString in interface Node
    
    Returns:
    
    A string representation of this node.
  - toString
```
public java.lang.String toString()
```
    Create a string representation of this node for dumping in a tree.
    
    Overrides:
    
    toString in class SimpleNode
    
    Returns:
    
    A string representation of this node.
  - subnodeToString
```
protected java.lang.String subnodeToString(int subnode)
```
    Create a string for a subnode. Automatically adds braces if necessary.
    
    Parameters:
    
    subnode - The index of the subnode.
    
    Returns:
    
    The string for the subnode.
  - getText
```
public java.lang.String getText()
```
    Get the expression text.
    
    Returns:
    
    The text.
  - getValue
```
public abstract java.lang.Object getValue(IValueFetcher fetcher)
```
    Evaluate the expression in the given state with respect to given parameters.
    
    Specified by:
    
    getValue in interface IParsedExpression
    
    Parameters:
    
    params - The parameters (string, value pairs), if any.
    
    Returns:
    
    The value of the term.
  - getStaticType
```
public java.lang.Class<?> getStaticType()
```
    Get the static type. If no information about the return type of an expression is available (e.g. because it depends on the evaluation context), the static type is null.
    
    Specified by:
    
    getStaticType in interface IParsedExpression
    
    Returns:
    
    The static type.
  - getParameters
```
public java.util.Set<java.lang.String> getParameters()
```
    Get the parameters used in the expression.
    
    Specified by:
    
    getParameters in interface IParsedExpression
  - getUnboundParameterNodes
```
public ParameterNode[] getUnboundParameterNodes()
```
    Get unbound parameter nodes.
    
    Returns:
    
    The unbound parameter nodes.
  - precompile
```
public void precompile()
```
    This method should be overridden to perform all possible checks and precompute all values (e.g. the static_type), which are independent of the evaluation context and parameters.
  - precompileTree
```
public void precompileTree()
```
    Precompile this node and all subnodes.
  - throwParseException
```
protected void throwParseException(java.lang.Throwable ex)
                            throws ParseException
```
    (Re)throw an exception that occured during parsing and add a useful error message.
    
    Parameters:
    
    ex - The exception to be rethrown (if any).
    
    Throws:
    
    ParseException
  - throwEvaluationException
```
protected void throwEvaluationException(java.lang.Throwable ex)
                                 throws java.lang.RuntimeException
```
    (Re)throw an exception that occured during evaluation and add a useful error message.
    
    Parameters:
    
    ex - The exception to be rethrown (if any).
    
    Throws:
    
    java.lang.RuntimeException
  - equals
```
public boolean equals(java.lang.Object o)
```
    Test if two nodes are equal.
    
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Get the hash code for the node.
    
    Overrides:
    
    hashCode in class java.lang.Object

Class ExpressionNode

Field Summary

Fields inherited from class jadex.javaparser.javaccimpl.SimpleNode

Constructor Summary

Method Summary

Methods inherited from class jadex.javaparser.javaccimpl.SimpleNode

Methods inherited from class java.lang.Object

Field Detail

text

expressiontext

imports

static_type

constant

constant_value

Constructor Detail

ExpressionNode

Method Detail

setExpressionText

getExpressionText

setText

appendText

setStaticType

setConstantValue

getConstantValue

setConstant

isConstant

toString

toPlainString

toString

subnodeToString

getText

getValue

getStaticType

getParameters

getUnboundParameterNodes

precompile

precompileTree

throwParseException

throwEvaluationException

equals

hashCode