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java.lang.Objectorg.apache.derby.impl.sql.compile.QueryTreeNode
org.apache.derby.impl.sql.compile.ValueNode
org.apache.derby.impl.sql.compile.ConstantNode
org.apache.derby.impl.sql.compile.BitConstantNode
Field Summary | |
private int |
bitLength
|
protected DataValueDescriptor |
value
|
Fields inherited from class org.apache.derby.impl.sql.compile.ValueNode |
clause, dataTypeServices, IN_HAVING_CLAUSE, IN_SELECT_LIST, IN_UNKNOWN_CLAUSE, IN_WHERE_CLAUSE, transformed |
Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode |
AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, beginOffset, endOffset |
Constructor Summary | |
BitConstantNode()
|
Method Summary | |
ValueNode |
bindExpression(FromList fromList,
SubqueryList subqueryList,
java.util.Vector aggregateVector)
Bind this expression. |
boolean |
constantExpression(PredicateList whereClause)
Return whether or not this expression tree represents a constant value. |
(package private) void |
generateConstant(ExpressionClassBuilder acb,
MethodBuilder mb)
This generates the proper constant. |
void |
generateExpression(ExpressionClassBuilder acb,
MethodBuilder mb)
For a ConstantNode, we generate the equivalent literal value. |
ValueNode |
getClone()
Return a clone of this node. |
(package private) java.lang.Object |
getConstantValueAsObject()
Return an Object representing the bind time value of this expression tree. |
protected int |
getOrderableVariantType()
Return the variant type for the underlying expression. |
DataValueDescriptor |
getValue()
Get the value in this ConstantNode |
void |
init(java.lang.Object arg1)
Initializer for a BitConstantNode. |
void |
init(java.lang.Object arg1,
java.lang.Object arg2)
Initialize a query tree node. |
void |
init(java.lang.Object typeId,
java.lang.Object nullable,
java.lang.Object maximumWidth)
Initializer for non-numeric types. |
boolean |
isCloneable()
Return whether or not this expression tree is cloneable. |
boolean |
isConstantExpression()
Return whether or not this expression tree represents a constant expression. |
boolean |
isNull()
Return whether or not this node represents a typed null constant. |
(package private) void |
setConstantWidth(ExpressionClassBuilder acb,
MethodBuilder mb)
|
(package private) void |
setValue(DataValueDescriptor value)
Set the value in this ConstantNode. |
java.lang.String |
toString()
Convert this object to a String. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
private int bitLength
protected DataValueDescriptor value
Constructor Detail |
public BitConstantNode()
Method Detail |
public void init(java.lang.Object arg1) throws StandardException
init
in class QueryTreeNode
arg1
- A Bit containing the value of the constant
- OR -
StandardException
public void init(java.lang.Object arg1, java.lang.Object arg2) throws StandardException
QueryTreeNode
init
in class QueryTreeNode
StandardException
- Thrown on errorpublic void init(java.lang.Object typeId, java.lang.Object nullable, java.lang.Object maximumWidth) throws StandardException
init
in class ConstantNode
typeId
- The Type ID of the datatypenullable
- True means the constant is nullablemaximumWidth
- The maximum number of bytes in the data value
StandardException
java.lang.Object getConstantValueAsObject() throws StandardException
getConstantValueAsObject
in class ValueNode
StandardException
- Thrown on errorvoid generateConstant(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException
generateConstant
in class ConstantNode
acb
- The ExpressionClassBuilder for the class being builtmb
- The method the code to place the code
StandardException
- Thrown on errorvoid setConstantWidth(ExpressionClassBuilder acb, MethodBuilder mb)
setConstantWidth
in class ConstantNode
void setValue(DataValueDescriptor value)
public DataValueDescriptor getValue()
public java.lang.String toString()
toString
in class ValueNode
public boolean isCloneable()
isCloneable
in class ValueNode
public ValueNode getClone()
getClone
in class ValueNode
public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, java.util.Vector aggregateVector)
bindExpression
in class ValueNode
fromList
- The FROM list for the query this
expression is in, for binding columns.subqueryList
- The subquery list being built as we find SubqueryNodesaggregateVector
- The aggregate vector being built as we find AggregateNodes
public boolean isConstantExpression()
isConstantExpression
in class ValueNode
public boolean constantExpression(PredicateList whereClause)
ValueNode
constantExpression
in class ValueNode
ValueNode.constantExpression(org.apache.derby.impl.sql.compile.PredicateList)
public void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException
generateExpression
in class ValueNode
acb
- The ExpressionClassBuilder for the class being builtmb
- The method the code to place the code
StandardException
- Thrown on errorpublic boolean isNull()
protected int getOrderableVariantType()
getOrderableVariantType
in class ValueNode
|
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