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java.lang.Objectantlr.BaseAST
antlr.CommonAST
org.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST
org.apache.jdo.impl.jdoql.tree.NodeImpl
org.apache.jdo.impl.jdoql.tree.Expr
org.apache.jdo.impl.jdoql.tree.ConstantExpr
This node represents a constant expression.
Examples of constant expressions are BooleanLiteralExpression
or
ByteLiteralExpression
. It does not have any children.
Field Summary | |
(package private) java.lang.Object |
value
|
Fields inherited from class org.apache.jdo.impl.jdoql.tree.NodeImpl |
children, clazz, msg, object, parent |
Fields inherited from class org.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST |
column, line, typeInfo |
Fields inherited from class antlr.CommonAST |
|
Fields inherited from class antlr.BaseAST |
down, right |
Constructor Summary | |
|
ConstantExpr()
The noarg constructor is needed for ANTLR support and deserialization. |
(package private) |
ConstantExpr(int tokenType,
java.lang.String tokenName,
java.lang.Object value)
This constructor is called by specialized nodes. |
(package private) |
ConstantExpr(java.lang.Object value)
This constructor is called by the query tree instance. |
|
ConstantExpr(antlr.Token token)
The noarg constructor is needed for ANTLR support. |
Method Summary | |
void |
arrive(NodeVisitor visitor)
Delegates to the argument visitor . |
java.lang.Object |
getValue()
Returns the value represented by this expression. |
java.lang.Object |
leave(NodeVisitor visitor,
java.lang.Object[] results)
Delegates to the argument visitor . |
static ConstantExpr |
newConstant(java.lang.Object value)
Returns an instance of ConstantExpression . |
Methods inherited from class org.apache.jdo.impl.jdoql.tree.NodeImpl |
ASTToChildren, clone, getChildren, getJavaClass, getObject, getParent, getTokenType, setChildren, setObject, setParent, toString, walkNextChild |
Methods inherited from class org.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST |
getColumn, getLine, getTypeInfo, initialize, initialize, initialize, setColumn, setLine, setTypeInfo, treeToString |
Methods inherited from class antlr.CommonAST |
getText, getType, initialize, setText, setType |
Methods inherited from class antlr.BaseAST |
addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.jdo.jdoql.tree.Node |
getChildren, getJavaClass, getObject, getParent, getTokenType, setObject, setParent, walkNextChild |
Field Detail |
java.lang.Object value
Constructor Detail |
public ConstantExpr()
setChildren
optionally.
public ConstantExpr(antlr.Token token)
setChildren
optionally.
ConstantExpr(int tokenType, java.lang.String tokenName, java.lang.Object value)
setChildren
optionally.
tokenType
- the token tpyetokenName
- the name of this nodeConstantExpr(java.lang.Object value)
value
- the value represented by this expressionMethod Detail |
public static ConstantExpr newConstant(java.lang.Object value)
ConstantExpression
.
This method handles null
as a constant expression.
value
- the object wrapped by the constant expression
public java.lang.Object getValue()
getValue
in interface ConstantExpression
public void arrive(NodeVisitor visitor)
visitor
.
arrive
in interface Node
arrive
in class NodeImpl
visitor
- the node visitorpublic java.lang.Object leave(NodeVisitor visitor, java.lang.Object[] results)
visitor
.
leave
in interface Node
leave
in class NodeImpl
visitor
- the node visitorresults
- the result array
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