Class VarbitConstantNode
- java.lang.Object
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- org.apache.derby.impl.sql.compile.QueryTreeNode
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- org.apache.derby.impl.sql.compile.ValueNode
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- org.apache.derby.impl.sql.compile.ConstantNode
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- org.apache.derby.impl.sql.compile.BitConstantNode
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- org.apache.derby.impl.sql.compile.VarbitConstantNode
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- All Implemented Interfaces:
Visitable
public final class VarbitConstantNode extends BitConstantNode
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Field Summary
Fields Modifier and Type Field Description (package private) static int
K_BLOB
(package private) static int
K_LONGVAR
(package private) static int
K_VAR
(package private) int
kind
This class is used to hold logically different objects for space efficiency.-
Fields inherited from class org.apache.derby.impl.sql.compile.ConstantNode
value
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Fields inherited from class org.apache.derby.impl.sql.compile.ValueNode
transformed
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Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
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Constructor Summary
Constructors Constructor Description VarbitConstantNode(java.lang.String hexValue, int bitLength, ContextManager cm)
VarbitConstantNode(TypeId t, ContextManager cm)
Construct constant node for one of VARBINARY, LONG VARBINARY and BLOB types.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) boolean
isSameNodeKind(ValueNode o)
Some node classes represent several logical node types (to reduce footprint), which we call kinds.-
Methods inherited from class org.apache.derby.impl.sql.compile.BitConstantNode
generateConstant, getConstantValueAsObject
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Methods inherited from class org.apache.derby.impl.sql.compile.ConstantNode
bindExpression, constantExpression, generateExpression, getClone, getOrderableVariantType, getValue, isCloneable, isConstantExpression, isEquivalent, isNull, setValue, toString
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Methods inherited from class org.apache.derby.impl.sql.compile.ValueNode
bindExpression, categorize, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, genIsNullTree, genSQLJavaSQLTree, getColumnName, getDataValueFactory, getSchemaName, getSourceResultColumn, getTableName, getTablesReferenced, getTransformed, getTypeCompiler, getTypeId, getTypeServices, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isInListProbeNode, isParameterNode, isRelationalOperator, optimizableEqualityNode, preprocess, putAndsOnTop, remapColumnReferencesToExpressions, requiresTypeFromContext, selectivity, setCollationInfo, setCollationInfo, setCollationUsingCompilationSchema, setCollationUsingCompilationSchema, setNullability, setTransformed, setType, setType, setType, updatableByCursor, verifyChangeToCNF, verifyEliminateNots, verifyPutAndsOnTop
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Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
accept, acceptChildren, 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, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist
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Field Detail
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K_VAR
static final int K_VAR
- See Also:
- Constant Field Values
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K_LONGVAR
static final int K_LONGVAR
- See Also:
- Constant Field Values
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K_BLOB
static final int K_BLOB
- See Also:
- Constant Field Values
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kind
final int kind
This class is used to hold logically different objects for space efficiency.kind
represents the logical object type. See alsoValueNode.isSameNodeKind(org.apache.derby.impl.sql.compile.ValueNode)
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Constructor Detail
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VarbitConstantNode
VarbitConstantNode(TypeId t, ContextManager cm) throws StandardException
Construct constant node for one of VARBINARY, LONG VARBINARY and BLOB types.- Parameters:
t
- the type for which we want a constant nodecm
- context manager- Throws:
StandardException
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VarbitConstantNode
VarbitConstantNode(java.lang.String hexValue, int bitLength, ContextManager cm) throws StandardException
- Throws:
StandardException
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Method Detail
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isSameNodeKind
boolean isSameNodeKind(ValueNode o)
Description copied from class:ValueNode
Some node classes represent several logical node types (to reduce footprint), which we call kinds. This means that implementations ofValueNode.isEquivalent(org.apache.derby.impl.sql.compile.ValueNode)
cannot always just useinstanceof
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 ofisEquivalent
.- Overrides:
isSameNodeKind
in classValueNode
- Parameters:
o
- The other value node whose kind we want to compare with.- Returns:
true
ifthis
ando
represent the same logical node type, i.e. kind.
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