class TernaryOperatorNode extends OperatorNode
substr()
.
Java operators are not represented here: the JSQL language allows Java
methods to be called from expressions, but not Java operators.Modifier and Type | Field and Description |
---|---|
(package private) static int |
K_LIKE |
(package private) static int |
K_LOCATE |
(package private) static int |
K_SUBSTRING |
(package private) static int |
K_TIMESTAMPADD |
(package private) static int |
K_TIMESTAMPDIFF |
(package private) static int |
K_TRIM |
(package private) int |
kind
This class is used to hold logically different objects for
space efficiency.
|
(package private) java.lang.String |
leftInterfaceType |
(package private) ValueNode |
leftOperand |
(package private) java.lang.String |
methodName |
(package private) java.lang.String |
operator |
(package private) ValueNode |
receiver |
(package private) java.lang.String |
receiverInterfaceType |
(package private) java.lang.String |
resultInterfaceType |
(package private) java.lang.String |
rightInterfaceType |
(package private) ValueNode |
rightOperand |
(package private) static java.lang.String[][] |
TernaryArgType |
(package private) static java.lang.String[] |
TernaryMethodNames |
(package private) static java.lang.String[] |
TernaryOperators |
(package private) static java.lang.String[] |
TernaryResultType |
(package private) int |
trimType |
transformed
AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
Constructor and Description |
---|
TernaryOperatorNode(ValueNode receiver,
ValueNode leftOperand,
ValueNode rightOperand,
int kind,
ContextManager cm)
Constructor for a TernaryOperatorNode
|
TernaryOperatorNode(ValueNode receiver,
ValueNode leftOperand,
ValueNode rightOperand,
int kind,
int trimType,
ContextManager cm)
Constructor for a TernaryOperatorNode
|
Modifier and Type | Method and Description |
---|---|
(package private) void |
acceptChildren(Visitor v)
Accept the visitor for all visitable children of this node.
|
private void |
bindDateTimeArg(ValueNode arg,
int argNumber) |
(package private) ValueNode |
bindExpression(FromList fromList,
SubqueryList subqueryList,
java.util.List<AggregateNode> aggregates)
Bind this expression.
|
private boolean |
bindParameter(ValueNode arg,
int 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) |
(package private) boolean |
categorize(JBitSet referencedTabs,
boolean simplePredsOnly)
Categorize this predicate.
|
(package private) boolean |
constantExpression(PredicateList whereClause)
Return whether or not this expression tree represents a constant value.
|
private void |
constructorMinion(ValueNode receiver,
ValueNode leftOperand,
ValueNode rightOperand,
int trimType) |
(package private) void |
generateExpression(ExpressionClassBuilder acb,
MethodBuilder mb)
Do code generation for this ternary operator.
|
(package private) ValueNode |
getLeftOperand()
Get the leftOperand
|
(package private) ValueNode |
getReceiver() |
(package private) ValueNode |
getRightOperand()
Get the rightOperand
|
private DataTypeDescriptor |
getVarcharDescriptor() |
(package private) boolean |
isConstantExpression()
Return whether or not this expression tree represents a constant expression.
|
(package private) boolean |
isEquivalent(ValueNode o)
Tests if this node is equivalent to the specified ValueNode.
|
(package private) boolean |
isSameNodeKind(ValueNode o)
Some node classes represent several logical node types (to reduce
footprint), which we call kinds.
|
(package private) ValueNode |
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.
|
(package private) ValueNode |
preprocess(int numTables,
FromList outerFromList,
SubqueryList outerSubqueryList,
PredicateList outerPredicateList)
Preprocess an expression tree.
|
(package private) void |
printSubNodes(int depth)
Prints the sub-nodes of this object.
|
(package private) ValueNode |
remapColumnReferencesToExpressions()
Remap all ColumnReferences in this tree to be clones of the
underlying expression.
|
(package private) void |
setLeftOperand(ValueNode newLeftOperand)
Set the leftOperand to the specified ValueNode
|
private void |
setResultType(TypeId resultType) |
(package private) void |
setRightOperand(ValueNode newRightOperand)
Set the rightOperand to the specified ValueNode
|
(package private) ValueNode |
substrBind()
Bind substr expression.
|
private void |
throwBadType(java.lang.String funcName,
java.lang.String type) |
private ValueNode |
timestampAddBind()
Bind TIMESTAMPADD expression.
|
private ValueNode |
timestampDiffBind()
Bind TIMESTAMPDIFF expression.
|
java.lang.String |
toString()
Convert this object to a String.
|
private ValueNode |
trimBind()
Bind trim expression.
|
pushSqlXmlUtil
bindExpression, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, genIsNullTree, genSQLJavaSQLTree, getClone, getColumnName, getConstantValueAsObject, getDataValueFactory, getOrderableVariantType, getSchemaName, getSourceResultColumn, getTableName, getTablesReferenced, getTransformed, getTypeCompiler, getTypeId, getTypeServices, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isCloneable, isInListProbeNode, isParameterNode, isRelationalOperator, optimizableEqualityNode, putAndsOnTop, requiresTypeFromContext, selectivity, setCollationInfo, setCollationInfo, setCollationUsingCompilationSchema, setCollationUsingCompilationSchema, setNullability, setTransformed, setType, setType, setType, updatableByCursor, verifyChangeToCNF, verifyEliminateNots, verifyPutAndsOnTop
accept, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist
static final int K_TRIM
static final int K_LOCATE
static final int K_SUBSTRING
static final int K_LIKE
static final int K_TIMESTAMPADD
static final int K_TIMESTAMPDIFF
final int kind
kind
represents the logical object
type. See also ValueNode.isSameNodeKind(org.apache.derby.impl.sql.compile.ValueNode)
.java.lang.String operator
java.lang.String methodName
ValueNode receiver
ValueNode leftOperand
ValueNode rightOperand
java.lang.String resultInterfaceType
java.lang.String receiverInterfaceType
java.lang.String leftInterfaceType
java.lang.String rightInterfaceType
int trimType
static final java.lang.String[] TernaryOperators
static final java.lang.String[] TernaryMethodNames
static final java.lang.String[] TernaryResultType
static final java.lang.String[][] TernaryArgType
TernaryOperatorNode(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int kind, ContextManager cm)
receiver
- The receiver (e.g., string being operated on in
substr()
)leftOperand
- The left operand of the noderightOperand
- The right operand of the nodekind
- The kind of the operandcm
- The context managerTernaryOperatorNode(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int kind, int trimType, ContextManager cm)
receiver
- The receiver (e.g., string being operated on in
substr()
)leftOperand
- The left operand of the noderightOperand
- The right operand of the nodekind
- The kind of the operandtrimType
- The trim typecm
- The context managerprivate void constructorMinion(ValueNode receiver, ValueNode leftOperand, ValueNode rightOperand, int trimType)
public java.lang.String toString()
void printSubNodes(int depth)
printSubNodes
in class QueryTreeNode
depth
- The depth of this node in the treeValueNode bindExpression(FromList fromList, SubqueryList subqueryList, java.util.List<AggregateNode> aggregates) throws StandardException
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 SubqueryNodesaggregates
- The aggregate list being built as we find AggregateNodesStandardException
- Thrown on errorValueNode preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList) throws StandardException
preprocess
in class ValueNode
numTables
- Number of tables in the DML StatementouterFromList
- FromList from outer query blockouterSubqueryList
- SubqueryList from outer query blockouterPredicateList
- PredicateList from outer query blockStandardException
- Thrown on errorvoid generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException
generateExpression
in class ValueNode
acb
- The ExpressionClassBuilder for the class we're generatingmb
- The method the expression will go intoStandardException
- Thrown on errorvoid setLeftOperand(ValueNode newLeftOperand)
newLeftOperand
- The new leftOperandValueNode getLeftOperand()
void setRightOperand(ValueNode newRightOperand)
newRightOperand
- The new rightOperandValueNode getRightOperand()
boolean categorize(JBitSet referencedTabs, boolean simplePredsOnly) throws StandardException
categorize
in class ValueNode
referencedTabs
- JBitSet with bit map of referenced FromTablessimplePredsOnly
- Whether or not to consider method
calls, field references and conditional nodes
when building bit mapStandardException
- Thrown on errorValueNode remapColumnReferencesToExpressions() throws StandardException
remapColumnReferencesToExpressions
in class ValueNode
StandardException
- Thrown on errorboolean isConstantExpression()
isConstantExpression
in class ValueNode
boolean constantExpression(PredicateList whereClause)
ValueNode
constantExpression
in class ValueNode
ValueNode.constantExpression(org.apache.derby.impl.sql.compile.PredicateList)
void acceptChildren(Visitor v) throws StandardException
acceptChildren
in class QueryTreeNode
v
- the visitorStandardException
- on errorprivate ValueNode trimBind() throws StandardException
StandardException
- Thrown on errorprivate void setResultType(TypeId resultType) throws StandardException
StandardException
ValueNode locateBind() throws StandardException
StandardException
- Thrown on errorprotected ValueNode castArgToString(ValueNode vn) throws StandardException
StandardException
ValueNode substrBind() throws StandardException
StandardException
- Thrown on errorprivate ValueNode timestampAddBind() throws StandardException
StandardException
- Thrown on errorprivate ValueNode timestampDiffBind() throws StandardException
StandardException
- Thrown on errorprivate void bindDateTimeArg(ValueNode arg, int argNumber) throws StandardException
StandardException
private boolean bindParameter(ValueNode arg, int jdbcType) throws StandardException
arg
- 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
- Associate this type with arg if arg is a ? param with no
type associated with itStandardException
ValueNode getReceiver()
private void throwBadType(java.lang.String funcName, java.lang.String type) throws StandardException
StandardException
protected void bindToBuiltIn() throws StandardException
StandardException
private DataTypeDescriptor getVarcharDescriptor()
boolean isSameNodeKind(ValueNode o)
ValueNode
ValueNode.isEquivalent(org.apache.derby.impl.sql.compile.ValueNode)
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
.isSameNodeKind
in class ValueNode
o
- The other value node whose kind we want to compare with.true
if this
and o
represent the same
logical node type, i.e. kind.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
Apache Derby V10.13 Internals - Copyright © 2004,2016 The Apache Software Foundation. All Rights Reserved.