Package org.olap4j.mdx
Class LevelNode
- java.lang.Object
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- org.olap4j.mdx.LevelNode
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- All Implemented Interfaces:
ParseTreeNode
public class LevelNode extends java.lang.Object implements ParseTreeNode
Usage of aLevel
as an expression in an MDX parse tree.- Since:
- Jun 4, 2007
- Author:
- jhyde
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Constructor Summary
Constructors Constructor Description LevelNode(ParseRegion region, Level level)
Creates a LevelNode.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description <T> T
accept(ParseTreeVisitor<T> visitor)
Accepts a visitor to this MDX parse tree node.LevelNode
deepCopy()
Creates a deep copy of this ParseTreeNode object.Level
getLevel()
Returns the Level used in this expression.ParseRegion
getRegion()
Returns the region of the source code which this node was created from, if it was created by parsing.Type
getType()
Returns the type of this expression.java.lang.String
toString()
void
unparse(ParseTreeWriter writer)
Converts this node into MDX text.
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Constructor Detail
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LevelNode
public LevelNode(ParseRegion region, Level level)
Creates a LevelNode.- Parameters:
region
- Region of source codelevel
- Level which is used in the expression
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Method Detail
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getRegion
public ParseRegion getRegion()
Description copied from interface:ParseTreeNode
Returns the region of the source code which this node was created from, if it was created by parsing.A non-leaf node's region will encompass the regions of all of its children. For example, a the region of a function call node
Crossjoin([Gender], {[Store].[USA]})
stretches from the first character of the function name to the closing parenthesis.Region may be null, if the node was created programmatically, not from a piece of source code.
- Specified by:
getRegion
in interfaceParseTreeNode
- Returns:
- Region of the source code this node was created from, if it was created by parsing
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getLevel
public Level getLevel()
Returns the Level used in this expression.- Returns:
- level used in this expression
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accept
public <T> T accept(ParseTreeVisitor<T> visitor)
Description copied from interface:ParseTreeNode
Accepts a visitor to this MDX parse tree node.The implementation should generally dispatches to the
ParseTreeVisitor.visit(org.olap4j.mdx.SelectNode)
method appropriate to the type of expression.- Specified by:
accept
in interfaceParseTreeNode
- Parameters:
visitor
- Visitor- Returns:
- T, the specific return type of the visitor
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getType
public Type getType()
Description copied from interface:ParseTreeNode
Returns the type of this expression.Returns null if this node is not an expression, for instance a
SELECT
node.- Specified by:
getType
in interfaceParseTreeNode
- Returns:
- type of this expression
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unparse
public void unparse(ParseTreeWriter writer)
Description copied from interface:ParseTreeNode
Converts this node into MDX text.- Specified by:
unparse
in interfaceParseTreeNode
- Parameters:
writer
- Parse tree writer
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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deepCopy
public LevelNode deepCopy()
Description copied from interface:ParseTreeNode
Creates a deep copy of this ParseTreeNode object.Note: implementing classes can return the concrete type instead of ParseTreeNode (using Java 1.5 covariant return types)
- Specified by:
deepCopy
in interfaceParseTreeNode
- Returns:
- The deep copy of this ParseTreeNode
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