Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.sql.compile.TernaryOperatorNode

Modifier and Type	Field and Description
pack-priv static final int	K_LIKE
pack-priv static final int	K_LOCATE
pack-priv static final int	K_SUBSTRING
pack-priv static final int	K_TIMESTAMPADD
pack-priv static final int	K_TIMESTAMPDIFF
pack-priv static final int	K_TRIM
pack-priv final int	kind This class is used to hold logically different objects for space efficiency.
pack-priv String	leftInterfaceType
pack-priv ValueNode	leftOperand
pack-priv String	methodName
pack-priv String	operator
pack-priv ValueNode	receiver
pack-priv String	receiverInterfaceType
pack-priv String	resultInterfaceType
pack-priv String	rightInterfaceType
pack-priv ValueNode	rightOperand
pack-priv static final String[][]	TernaryArgType
pack-priv static final String[]	TernaryMethodNames
pack-priv static final String[]	TernaryOperators
pack-priv static final String[]	TernaryResultType
pack-priv int	trimType

Access	Constructor and Description
pack-priv	TernaryOperatorNode(ValueNode The receiver (e.g., string being operated on in `substr()`) receiver, ValueNode The left operand of the node leftOperand, ValueNode The right operand of the node rightOperand, int The kind of the operand kind, ContextManager The context manager cm) Constructor for a TernaryOperatorNode
pack-priv	TernaryOperatorNode(ValueNode The receiver (e.g., string being operated on in `substr()`) receiver, ValueNode The left operand of the node leftOperand, ValueNode The right operand of the node rightOperand, int The kind of the operand kind, int The trim type trimType, ContextManager The context manager cm) Constructor for a TernaryOperatorNode

Method Summary

Modifier and Type	Method and Description
pack-priv void	acceptChildren(Visitor the visitor v) Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.acceptChildren. Accept the visitor for all visitable children of this node.
private void	bindDateTimeArg(ValueNode arg, int argNumber)
pack-priv ValueNode	Returns: The new top of the expression tree. bindExpression(FromList The FROM list for the query this expression is in, for binding columns. fromList, SubqueryList The subquery list being built as we find SubqueryNodes subqueryList, List<AggregateNode> The aggregate list being built as we find AggregateNodes aggregates) Overrides org.apache.derby.impl.sql.compile.ValueNode.bindExpression. Bind this expression.
private boolean	Returns: true if arg is a ? param with no type associated with it bindParameter(ValueNode Check if arg is a ? param and if yes, then set it's type to jdbcType if arg doesn't have a type associated with it. arg, int Associate this type with arg if arg is a ? param with no type associated with it jdbcType) This method gets called for non-character string types and hence no need to set any collation info.
protected void	bindToBuiltIn()
protected ValueNode	castArgToString(ValueNode vn)
pack-priv boolean	Returns: boolean Whether or not source.expression is a ColumnReference or a VirtualColumnNode. categorize(JBitSet JBitSet with bit map of referenced FromTables referencedTabs, boolean Whether or not to consider method calls, field references and conditional nodes when building bit map simplePredsOnly) Overrides org.apache.derby.impl.sql.compile.ValueNode.categorize. Categorize this predicate.
pack-priv boolean	constantExpression(PredicateList whereClause) Overrides org.apache.derby.impl.sql.compile.ValueNode.constantExpression. Return whether or not this expression tree represents a constant value.
private void	constructorMinion(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int trimType)
pack-priv void	generateExpression(ExpressionClassBuilder The ExpressionClassBuilder for the class we're generating acb, MethodBuilder The method the expression will go into mb) Overrides org.apache.derby.impl.sql.compile.ValueNode.generateExpression. Do code generation for this ternary operator.
pack-priv ValueNode	Returns: The current leftOperand. getLeftOperand() Get the leftOperand
pack-priv ValueNode	getReceiver()
pack-priv ValueNode	Returns: The current rightOperand. getRightOperand() Get the rightOperand
private DataTypeDescriptor	getVarcharDescriptor()
pack-priv boolean	Returns: Whether or not this expression tree represents a constant expression. isConstantExpression() Overrides org.apache.derby.impl.sql.compile.ValueNode.isConstantExpression. Return whether or not this expression tree represents a constant expression.
pack-priv boolean	isEquivalent(ValueNode the node to compare this ValueNode against. o) Implements abstract org.apache.derby.impl.sql.compile.ValueNode.isEquivalent. Tests if this node is equivalent to the specified ValueNode.
pack-priv boolean	isSameNodeKind(ValueNode The other value node whose kind we want to compare with. o) Overrides org.apache.derby.impl.sql.compile.ValueNode.isSameNodeKind. Some node classes represent several logical node types (to reduce footprint), which we call kinds.
pack-priv ValueNode	Returns: The new top of the expression tree. locateBind() Bind locate operator The variable receiver is the string which will searched The variable leftOperand is the search character that will looked in the receiver variable.
pack-priv ValueNode	Returns: The modified expression preprocess(int Number of tables in the DML Statement numTables, FromList FromList from outer query block outerFromList, SubqueryList SubqueryList from outer query block outerSubqueryList, PredicateList PredicateList from outer query block outerPredicateList) Overrides org.apache.derby.impl.sql.compile.ValueNode.preprocess. Preprocess an expression tree.
pack-priv void	printSubNodes(int The depth of this node in the tree depth) Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.printSubNodes. Prints the sub-nodes of this object.
pack-priv ValueNode	Returns: ValueNode The remapped expression tree. remapColumnReferencesToExpressions() Overrides org.apache.derby.impl.sql.compile.ValueNode.remapColumnReferencesToExpressions. Remap all ColumnReferences in this tree to be clones of the underlying expression.
pack-priv void	setLeftOperand(ValueNode The new leftOperand newLeftOperand) Set the leftOperand to the specified ValueNode
private void	setResultType(TypeId resultType)
pack-priv void	setRightOperand(ValueNode The new rightOperand newRightOperand) Set the rightOperand to the specified ValueNode
pack-priv ValueNode	Returns: The new top of the expression tree. substrBind() Bind substr expression.
private void	throwBadType(String funcName, String type)
private ValueNode	Returns: The new top of the expression tree. timestampAddBind() Bind TIMESTAMPADD expression.
private ValueNode	Returns: The new top of the expression tree. timestampDiffBind() Bind TIMESTAMPDIFF expression.
public String	Returns: This object as a String toString() Overrides org.apache.derby.impl.sql.compile.ValueNode.toString. Convert this object to a String.
private ValueNode	Returns: The new top of the expression tree. trimBind() Bind trim expression.

Inherited from org.apache.derby.impl.sql.compile.OperatorNode:: pushSqlXmlUtil

K_LIKE	back to summary
pack-priv static final int K_LIKE

K_LOCATE	back to summary
pack-priv static final int K_LOCATE

K_SUBSTRING	back to summary
pack-priv static final int K_SUBSTRING

K_TIMESTAMPADD	back to summary
pack-priv static final int K_TIMESTAMPADD

K_TIMESTAMPDIFF	back to summary
pack-priv static final int K_TIMESTAMPDIFF

K_TRIM	back to summary
pack-priv static final int K_TRIM

kind	back to summary
pack-priv final int kind This class is used to hold logically different objects for space efficiency. `kind` represents the logical object type. See also `ValueNode#isSameNodeKind`.

leftInterfaceType	back to summary
pack-priv String leftInterfaceType

leftOperand	back to summary
pack-priv ValueNode leftOperand

methodName	back to summary
pack-priv String methodName

operator	back to summary
pack-priv String operator

receiver	back to summary
pack-priv ValueNode receiver

receiverInterfaceType	back to summary
pack-priv String receiverInterfaceType

resultInterfaceType	back to summary
pack-priv String resultInterfaceType

rightInterfaceType	back to summary
pack-priv String rightInterfaceType

rightOperand	back to summary
pack-priv ValueNode rightOperand

TernaryArgType	back to summary
pack-priv static final String[][] TernaryArgType

TernaryMethodNames	back to summary
pack-priv static final String[] TernaryMethodNames

TernaryOperators	back to summary
pack-priv static final String[] TernaryOperators

TernaryResultType	back to summary
pack-priv static final String[] TernaryResultType

trimType	back to summary
pack-priv int trimType

TernaryOperatorNode	back to summary
pack-priv TernaryOperatorNode(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int kind, ContextManager cm) Constructor for a TernaryOperatorNode Parameters receiver:ValueNode The receiver (e.g., string being operated on in `substr()`) leftOperand:ValueNode The left operand of the node rightOperand:ValueNode The right operand of the node kind:int The kind of the operand cm:ContextManager The context manager

TernaryOperatorNode	back to summary
pack-priv TernaryOperatorNode(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int kind, int trimType, ContextManager cm) Constructor for a TernaryOperatorNode Parameters receiver:ValueNode The receiver (e.g., string being operated on in `substr()`) leftOperand:ValueNode The left operand of the node rightOperand:ValueNode The right operand of the node kind:int The kind of the operand trimType:int The trim type cm:ContextManager The context manager

Method Detail

acceptChildren	back to summary
pack-priv void acceptChildren(Visitor v) throws StandardException Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.acceptChildren. Accept the visitor for all visitable children of this node. Parameters v:Visitor the visitor Annotations @Override Exceptions StandardException: on error

acceptChildren

back to summary

pack-priv void acceptChildren(Visitor v) throws StandardException

Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.acceptChildren.

Accept the visitor for all visitable children of this node.

Parameters

v:Visitor: the visitor

Annotations

@Override

Exceptions

StandardException:: on error

bindDateTimeArg	back to summary
private void bindDateTimeArg(ValueNode arg, int argNumber) throws StandardException

bindExpression	back to summary
pack-priv ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, List<AggregateNode> aggregates) throws StandardException Overrides org.apache.derby.impl.sql.compile.ValueNode.bindExpression. Bind this expression. This means binding the sub-expressions, as well as figuring out what the return type is for this expression. Parameters fromList:FromList The FROM list for the query this expression is in, for binding columns. subqueryList:SubqueryList The subquery list being built as we find SubqueryNodes aggregates:List<AggregateNode> The aggregate list being built as we find AggregateNodes Returns:ValueNode The new top of the expression tree. Annotations @Override Exceptions StandardException: Thrown on error

bindExpression

back to summary

pack-priv ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, List<AggregateNode> aggregates) throws StandardException

Overrides org.apache.derby.impl.sql.compile.ValueNode.bindExpression.

Bind this expression. This means binding the sub-expressions, as well as figuring out what the return type is for this expression.

Parameters

fromList:FromList: The FROM list for the query this expression is in, for binding columns.
subqueryList:SubqueryList: The subquery list being built as we find SubqueryNodes
aggregates:List<AggregateNode>: The aggregate list being built as we find AggregateNodes

Returns:ValueNode

The new top of the expression tree.

Annotations

@Override

Exceptions

StandardException:: Thrown on error

bindParameter	back to summary
private boolean bindParameter(ValueNode arg, int jdbcType) throws StandardException This method gets called for non-character string types and hence no need to set any collation info. Collation applies only to character string types. Parameters arg:ValueNode Check if arg is a ? param and if yes, then set it's type to jdbcType if arg doesn't have a type associated with it. jdbcType:int Associate this type with arg if arg is a ? param with no type associated with it Returns:boolean true if arg is a ? param with no type associated with it

bindParameter

back to summary

private boolean bindParameter(ValueNode arg, int jdbcType) throws StandardException

This method gets called for non-character string types and hence no need to set any collation info. Collation applies only to character string types.

Parameters

arg:ValueNode: Check if arg is a ? param and if yes, then set it's type to jdbcType if arg doesn't have a type associated with it.
jdbcType:int: Associate this type with arg if arg is a ? param with no type associated with it

Returns:boolean

true if arg is a ? param with no type associated with it

bindToBuiltIn	back to summary
protected void bindToBuiltIn() throws StandardException

castArgToString	back to summary
protected ValueNode castArgToString(ValueNode vn) throws StandardException

categorize	back to summary
pack-priv boolean categorize(JBitSet referencedTabs, boolean simplePredsOnly) throws StandardException Overrides org.apache.derby.impl.sql.compile.ValueNode.categorize. Categorize this predicate. Initially, this means building a bit map of the referenced tables for each predicate. If the source of this ColumnReference (at the next underlying level) is not a ColumnReference or a VirtualColumnNode then this predicate will not be pushed down. For example, in: select * from (select 1 from s) a (x) where x = 1 we will not push down x = 1. Note It would be easy to handle the case of a constant, but if the inner SELECT returns an arbitrary expression, then we would have to copy that tree into the pushed predicate, and that tree could contain subqueries and method calls. RESOLVE - revisit this issue once we have views. Parameters referencedTabs:JBitSet JBitSet with bit map of referenced FromTables simplePredsOnly:boolean Whether or not to consider method calls, field references and conditional nodes when building bit map Returns:boolean boolean Whether or not source.expression is a ColumnReference or a VirtualColumnNode. Annotations @Override Exceptions StandardException: Thrown on error

categorize

back to summary

pack-priv boolean categorize(JBitSet referencedTabs, boolean simplePredsOnly) throws StandardException

Overrides org.apache.derby.impl.sql.compile.ValueNode.categorize.

Categorize this predicate. Initially, this means building a bit map of the referenced tables for each predicate. If the source of this ColumnReference (at the next underlying level) is not a ColumnReference or a VirtualColumnNode then this predicate will not be pushed down. For example, in: select * from (select 1 from s) a (x) where x = 1 we will not push down x = 1.

Note

It would be easy to handle the case of a constant, but if the inner SELECT returns an arbitrary expression, then we would have to copy that tree into the pushed predicate, and that tree could contain subqueries and method calls. RESOLVE - revisit this issue once we have views.

Parameters

referencedTabs:JBitSet: JBitSet with bit map of referenced FromTables
simplePredsOnly:boolean: Whether or not to consider method calls, field references and conditional nodes when building bit map

Returns:boolean

boolean Whether or not source.expression is a ColumnReference or a VirtualColumnNode.

Annotations

@Override

Exceptions

StandardException:: Thrown on error

constantExpression back to summary

constantExpression	back to summary
pack-priv boolean constantExpression(PredicateList whereClause) Overrides org.apache.derby.impl.sql.compile.ValueNode.constantExpression. Doc from org.apache.derby.impl.sql.compile.ValueNode.constantExpression. Return whether or not this expression tree represents a constant value. In this case, "constant" means that it will always evaluate to the same thing, even if it includes columns. A column is constant if it is compared to a constant expression. Returns:boolean True means this expression tree represents a constant value. Annotations @Override See Also `ValueNode#constantExpression`

pack-priv boolean constantExpression(PredicateList whereClause)

Overrides org.apache.derby.impl.sql.compile.ValueNode.constantExpression.

Doc from org.apache.derby.impl.sql.compile.ValueNode.constantExpression.

Return whether or not this expression tree represents a constant value. In this case, "constant" means that it will always evaluate to the same thing, even if it includes columns. A column is constant if it is compared to a constant expression.

Returns:boolean

True means this expression tree represents a constant value.

Annotations

@Override

See Also

ValueNode#constantExpression

constructorMinion	back to summary
private void constructorMinion(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int trimType)

generateExpression	back to summary
pack-priv void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException Overrides org.apache.derby.impl.sql.compile.ValueNode.generateExpression. Do code generation for this ternary operator. Parameters acb:ExpressionClassBuilder The ExpressionClassBuilder for the class we're generating mb:MethodBuilder The method the expression will go into Annotations @Override Exceptions StandardException: Thrown on error

generateExpression

back to summary

pack-priv void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException

Overrides org.apache.derby.impl.sql.compile.ValueNode.generateExpression.

Do code generation for this ternary operator.

Parameters

acb:ExpressionClassBuilder: The ExpressionClassBuilder for the class we're generating
mb:MethodBuilder: The method the expression will go into

Annotations

@Override

Exceptions

StandardException:: Thrown on error

getLeftOperand	back to summary
pack-priv ValueNode getLeftOperand() Get the leftOperand Returns:ValueNode The current leftOperand.

getLeftOperand

back to summary

pack-priv ValueNode getLeftOperand()

Get the leftOperand

Returns:ValueNode: The current leftOperand.

getReceiver	back to summary
pack-priv ValueNode getReceiver()

getRightOperand	back to summary
pack-priv ValueNode getRightOperand() Get the rightOperand Returns:ValueNode The current rightOperand.

getRightOperand

back to summary

pack-priv ValueNode getRightOperand()

Get the rightOperand

Returns:ValueNode: The current rightOperand.

getVarcharDescriptor	back to summary
private DataTypeDescriptor getVarcharDescriptor()

isConstantExpression	back to summary
pack-priv boolean isConstantExpression() Overrides org.apache.derby.impl.sql.compile.ValueNode.isConstantExpression. Return whether or not this expression tree represents a constant expression. Returns:boolean Whether or not this expression tree represents a constant expression. Annotations @Override

isConstantExpression

back to summary

pack-priv boolean isConstantExpression()

Overrides org.apache.derby.impl.sql.compile.ValueNode.isConstantExpression.

Return whether or not this expression tree represents a constant expression.

Returns:boolean

Whether or not this expression tree represents a constant expression.

Annotations

@Override

isEquivalent back to summary

isEquivalent	back to summary
pack-priv boolean isEquivalent(ValueNode o) throws StandardException Implements abstract org.apache.derby.impl.sql.compile.ValueNode.isEquivalent. Doc from org.apache.derby.impl.sql.compile.ValueNode.isEquivalent. Tests if this node is equivalent to the specified ValueNode. Two ValueNodes are considered equivalent if they will evaluate to the same value during query execution. 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: The two ValueNodes must be of the same node type to be considered equivalent. e.g.: CastNode vs. CastNode - equivalent (if their args also match), ColumnReference vs CastNode - not equivalent. If node P contains other ValueNode(s) and so on, those node(s) must also be of the same node type to be considered equivalent. If node P takes a parameter list, then the number of arguments and its arguments for the two nodes must also match to be considered equivalent. e.g.: CAST(c1 as INTEGER) vs CAST(c1 as SMALLINT), they are not equivalent. When comparing SQL NULLs in this context, they are considered to be equivalent. If this does not apply or it is determined that the two nodes are not equivalent then the derived class of this method should return false; otherwise, return true. Parameters o:ValueNode the node to compare this ValueNode against. Returns:boolean `true` if the two nodes are equivalent, `false` otherwise.

pack-priv boolean isEquivalent(ValueNode o) throws StandardException

Implements abstract org.apache.derby.impl.sql.compile.ValueNode.isEquivalent.

Doc from org.apache.derby.impl.sql.compile.ValueNode.isEquivalent.

Tests if this node is equivalent to the specified ValueNode. Two ValueNodes are considered equivalent if they will evaluate to the same value during query execution.

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:

The two ValueNodes must be of the same node type to be considered equivalent. e.g.: CastNode vs. CastNode - equivalent (if their args also match), ColumnReference vs CastNode - not equivalent.
If node P contains other ValueNode(s) and so on, those node(s) must also be of the same node type to be considered equivalent.
If node P takes a parameter list, then the number of arguments and its arguments for the two nodes must also match to be considered equivalent. e.g.: CAST(c1 as INTEGER) vs CAST(c1 as SMALLINT), they are not equivalent.
When comparing SQL NULLs in this context, they are considered to be equivalent.
If this does not apply or it is determined that the two nodes are not equivalent then the derived class of this method should return false; otherwise, return true.

Parameters

o:ValueNode: the node to compare this ValueNode against.

Returns:boolean

true if the two nodes are equivalent, false otherwise.

isSameNodeKind back to summary

isSameNodeKind	back to summary
pack-priv boolean isSameNodeKind(ValueNode o) Overrides org.apache.derby.impl.sql.compile.ValueNode.isSameNodeKind. Doc from org.apache.derby.impl.sql.compile.ValueNode.isSameNodeKind. Some node classes represent several logical node types (to reduce footprint), which we call kinds. This means that implementations of `isEquivalent` cannot always just use `instanceof` to check if the other node represents the same kind. Hence this method needs to be overridden by all node classes that represent several kinds. This default implementation does not look at kinds. It is only called from implementations of `isEquivalent`. Parameters o:ValueNode The other value node whose kind we want to compare with. Returns:boolean `true` if `this` and `o` represent the same logical node type, i.e. kind.

pack-priv boolean isSameNodeKind(ValueNode o)

Overrides org.apache.derby.impl.sql.compile.ValueNode.isSameNodeKind.

Doc from org.apache.derby.impl.sql.compile.ValueNode.isSameNodeKind.

Some node classes represent several logical node types (to reduce footprint), which we call kinds. This means that implementations of isEquivalent cannot always just use instanceof to check if the other node represents the same kind. Hence this method needs to be overridden by all node classes that represent several kinds. This default implementation does not look at kinds. It is only called from implementations of isEquivalent.

Parameters

o:ValueNode: The other value node whose kind we want to compare with.

Returns:boolean

true if this and o represent the same logical node type, i.e. kind.

locateBind	back to summary
pack-priv ValueNode locateBind() throws StandardException Bind locate operator The variable receiver is the string which will searched The variable leftOperand is the search character that will looked in the receiver variable. Returns:ValueNode The new top of the expression tree. Exceptions StandardException: Thrown on error

locateBind

back to summary

pack-priv ValueNode locateBind() throws StandardException

Bind locate operator The variable receiver is the string which will searched The variable leftOperand is the search character that will looked in the receiver variable.

Returns:ValueNode

The new top of the expression tree.

Exceptions

StandardException:: Thrown on error

preprocess	back to summary
pack-priv ValueNode preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList) throws StandardException Overrides org.apache.derby.impl.sql.compile.ValueNode.preprocess. Preprocess an expression tree. We do a number of transformations here (including subqueries, IN lists, LIKE and BETWEEN) plus subquery flattening. Note This is done before the outer ResultSetNode is preprocessed. Parameters numTables:int Number of tables in the DML Statement outerFromList:FromList FromList from outer query block outerSubqueryList:SubqueryList SubqueryList from outer query block outerPredicateList:PredicateList PredicateList from outer query block Returns:ValueNode The modified expression Annotations @Override Exceptions StandardException: Thrown on error

preprocess

back to summary

pack-priv ValueNode preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList) throws StandardException

Overrides org.apache.derby.impl.sql.compile.ValueNode.preprocess.

Preprocess an expression tree. We do a number of transformations here (including subqueries, IN lists, LIKE and BETWEEN) plus subquery flattening.

Note

This is done before the outer ResultSetNode is preprocessed.

Parameters

numTables:int: Number of tables in the DML Statement
outerFromList:FromList: FromList from outer query block
outerSubqueryList:SubqueryList: SubqueryList from outer query block
outerPredicateList:PredicateList: PredicateList from outer query block

Returns:ValueNode

The modified expression

Annotations

@Override

Exceptions

StandardException:: Thrown on error

printSubNodes	back to summary
pack-priv void printSubNodes(int depth) Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.printSubNodes. Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work. Parameters depth:int The depth of this node in the tree Annotations @Override

printSubNodes

back to summary

pack-priv void printSubNodes(int depth)

Overrides org.apache.derby.impl.sql.compile.QueryTreeNode.printSubNodes.

Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work.

Parameters

depth:int: The depth of this node in the tree

Annotations

@Override

remapColumnReferencesToExpressions	back to summary
pack-priv ValueNode remapColumnReferencesToExpressions() throws StandardException Overrides org.apache.derby.impl.sql.compile.ValueNode.remapColumnReferencesToExpressions. Remap all ColumnReferences in this tree to be clones of the underlying expression. Returns:ValueNode ValueNode The remapped expression tree. Annotations @Override Exceptions StandardException: Thrown on error

remapColumnReferencesToExpressions

back to summary

pack-priv ValueNode remapColumnReferencesToExpressions() throws StandardException

Overrides org.apache.derby.impl.sql.compile.ValueNode.remapColumnReferencesToExpressions.

Remap all ColumnReferences in this tree to be clones of the underlying expression.

Returns:ValueNode

ValueNode The remapped expression tree.

Annotations

@Override

Exceptions

StandardException:: Thrown on error

setLeftOperand	back to summary
pack-priv void setLeftOperand(ValueNode newLeftOperand) Set the leftOperand to the specified ValueNode Parameters newLeftOperand:ValueNode The new leftOperand

setLeftOperand

back to summary

pack-priv void setLeftOperand(ValueNode newLeftOperand)

Set the leftOperand to the specified ValueNode

Parameters

newLeftOperand:ValueNode: The new leftOperand

setResultType	back to summary
private void setResultType(TypeId resultType) throws StandardException

setRightOperand	back to summary
pack-priv void setRightOperand(ValueNode newRightOperand) Set the rightOperand to the specified ValueNode Parameters newRightOperand:ValueNode The new rightOperand

setRightOperand

back to summary

pack-priv void setRightOperand(ValueNode newRightOperand)

Set the rightOperand to the specified ValueNode

Parameters

newRightOperand:ValueNode: The new rightOperand

substrBind

back to summary

pack-priv ValueNode substrBind() throws StandardException

Bind substr expression.

Returns:ValueNode

The new top of the expression tree.

Exceptions

StandardException:: Thrown on error

throwBadType	back to summary
private void throwBadType(String funcName, String type) throws StandardException

timestampAddBind

back to summary

private ValueNode timestampAddBind() throws StandardException

Bind TIMESTAMPADD expression.

Returns:ValueNode

The new top of the expression tree.

Exceptions

StandardException:: Thrown on error

timestampDiffBind

back to summary

private ValueNode timestampDiffBind() throws StandardException

Bind TIMESTAMPDIFF expression.

Returns:ValueNode

The new top of the expression tree.

Exceptions

StandardException:: Thrown on error

toString

back to summary

public String toString()

Overrides org.apache.derby.impl.sql.compile.ValueNode.toString.

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Returns:String

This object as a String

Annotations

@Override

trimBind

back to summary

private ValueNode trimBind() throws StandardException

Bind trim expression. The variable receiver is the string that needs to be trimmed. The variable leftOperand is the character that needs to be trimmed from receiver.

Returns:ValueNode

The new top of the expression tree.

Exceptions

StandardException:: Thrown on error

pack-priv Class TernaryOperatorNode

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail