public class UnaryOperatorNode extends ValueNode
Modifier and Type | Field and Description |
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protected java.lang.String |
methodName |
protected java.lang.String |
operator |
protected java.lang.String |
receiverInterfaceType |
protected java.lang.String |
resultInterfaceType |
AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
Constructor and Description |
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UnaryOperatorNode() |
Modifier and Type | Method and Description |
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void |
copyFrom(QueryTreeNode node)
Fill this node with a deep copy of the given node.
|
java.lang.String |
getMethodName() |
ValueNode |
getOperand()
Get the operand of this unary operator.
|
java.lang.String |
getOperator()
Get the operator of this unary operator.
|
void |
init(java.lang.Object operand)
Initializer for a UnaryOperatorNode
|
void |
init(java.lang.Object operand,
java.lang.Object operatorOrOpType,
java.lang.Object methodNameOrAddedArgs)
Initializer for a UnaryOperatorNode.
|
protected boolean |
isEquivalent(ValueNode o)
Tests if this node is equivalent to the specified ValueNode.
|
void |
printSubNodes(int depth)
Prints the sub-nodes of this object.
|
void |
setOperand(ValueNode operand) |
java.lang.String |
toString()
Convert this object to a String.
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getColumnName, getSchemaName, getSourceResultColumn, getTableName, getType, getTypeId, init, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isConstantExpression, isInListProbeNode, isParameterNode, isRelationalOperator, isSameNodeType, setNullability, setType
accept, convertDefaultNode, debugFlush, debugPrint, formatNodeString, getBeginOffset, getDebugOutput, getEndOffset, getNodeFactory, getNodeType, getNullNode, getParserContext, getStatementType, getUserData, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, makeTableName, makeTableName, nodeHeader, printLabel, setBeginOffset, setDebugOutput, setEndOffset, setNodeType, setParserContext, setUserData, stackPrint, treePrint, treePrint, treePrint
protected java.lang.String operator
protected java.lang.String methodName
protected java.lang.String resultInterfaceType
protected java.lang.String receiverInterfaceType
public void init(java.lang.Object operand, java.lang.Object operatorOrOpType, java.lang.Object methodNameOrAddedArgs) throws StandardException
init
in class QueryTreeNode
operand
- The operand of the nodeoperator
- The name of the operator,methodName
- Name of the methodStandardException
- Thrown on errorpublic void init(java.lang.Object operand) throws StandardException
init
in class QueryTreeNode
operand
- The operand of the nodeStandardException
- Thrown on errorpublic void copyFrom(QueryTreeNode node) throws StandardException
copyFrom
in class ValueNode
StandardException
public java.lang.String getOperator()
public java.lang.String getMethodName()
public java.lang.String toString()
public void printSubNodes(int depth)
printSubNodes
in class QueryTreeNode
depth
- The depth of this node in the treepublic ValueNode getOperand()
public void setOperand(ValueNode operand)
protected boolean isEquivalent(ValueNode o) throws StandardException
ValueNode
This method provides basic expression matching facility for the derived class of ValueNode and it is used by the language layer to compare the node structural form of the two expressions for equivalence at bind phase.
Note that it is not comparing the actual row values at runtime to produce a result; hence, when comparing SQL NULLs, they are considered to be equivalent and not unknown.
One usage case of this method in this context is to compare the select column expression against the group by expression to check if they are equivalent. e.g.:
SELECT c1+c2 FROM t1 GROUP BY c1+c2
In general, node equivalence is determined by the derived class of ValueNode. But they generally abide to the rules below:
isEquivalent
in class ValueNode
o
- the node to compare this ValueNode against.true
if the two nodes are equivalent,
false
otherwise.StandardException
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