Class MaterializeSubqueryNode
- java.lang.Object
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- org.apache.derby.impl.sql.compile.QueryTreeNode
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- org.apache.derby.impl.sql.compile.ResultSetNode
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- org.apache.derby.impl.sql.compile.MaterializeSubqueryNode
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- All Implemented Interfaces:
Visitable
class MaterializeSubqueryNode extends ResultSetNode
A MaterializeSubqueryNode is used to replace the nodes for a subquery, to facilitate code generation for materialization if possible. See beetle 4373 for details.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.derby.impl.sql.compile.ResultSetNode
ResultSetNode.QueryExpressionClauses
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Field Summary
Fields Modifier and Type Field Description private LocalField
lf
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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 MaterializeSubqueryNode(LocalField lf, ContextManager cm)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) void
decrementLevel(int decrement)
Decrement (query block) level (0-based) for all of the tables in this ResultSet tree.(package private) void
generate(ActivationClassBuilder acb, MethodBuilder mb)
Do the code generation for this node.-
Methods inherited from class org.apache.derby.impl.sql.compile.ResultSetNode
acceptChildren, addNewPredicate, adjustForSortElimination, adjustForSortElimination, assignResultSetNumber, bindExpressions, bindExpressionsWithTables, bindNonVTITables, bindResultColumns, bindResultColumns, bindTargetExpressions, bindUntypedNullsToResultColumns, bindVTITables, changeAccessPath, columnTypesAndLengthsMatch, considerMaterialization, enhanceRCLForInsert, ensurePredicateList, fillInReferencedTableMap, flattenableInFromSubquery, generateNormalizationResultSet, generateResultSet, genProjectRestrict, genProjectRestrict, genProjectRestrictForReordering, getAllResultColumns, getCandidateFinalCostEstimate, getCostEstimate, getCursorTargetTable, getFinalCostEstimate, getFromList, getFromTableByName, getMatchingColumn, getNewCostEstimate, getOptimizer, getOptimizerImpl, getRCLForInsert, getReferencedTableMap, getResultColumns, getResultSetNumber, getScratchCostEstimate, isCursorTargetTable, isInsertSource, isNotExists, isOneRowResultSet, isOrderedOn, isPossibleDistinctScan, isStatementResultSet, isUpdatableCursor, LOJgetReferencedTables, makeResultDescription, makeResultDescriptors, markAsCursorTargetTable, markForDistinctScan, markStatementResultSet, modifyAccessPaths, modifyAccessPaths, notCursorTargetTable, notFlattenableJoin, numDistinctAggregates, optimize, parseDefault, performMaterialization, preprocess, printQueryExpressionSuffixClauses, printSubNodes, projectResultColumns, pushOffsetFetchFirst, pushOrderByList, pushQueryExpressionSuffix, referencesTarget, rejectParameters, rejectXMLValues, renameGeneratedResultNames, replaceOrForbidDefaults, returnsAtMostOneRow, setCandidateFinalCostEstimate, setCostEstimate, setCursorTargetTable, setInsertSource, setOptimizer, setReferencedTableMap, setResultColumns, setResultSetNumber, setResultToBooleanTrueNode, setScratchCostEstimate, setTableConstructorTypes, subqueryReferencesTarget, toString, updateTargetLockMode, verifySelectStarSubquery
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Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
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
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Field Detail
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lf
private LocalField lf
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Constructor Detail
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MaterializeSubqueryNode
MaterializeSubqueryNode(LocalField lf, ContextManager cm)
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Method Detail
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generate
void generate(ActivationClassBuilder acb, MethodBuilder mb) throws StandardException
Description copied from class:QueryTreeNode
Do the code generation for this node. This is a place-holder method - it should be over-ridden in the sub-classes.- Overrides:
generate
in classQueryTreeNode
- Parameters:
acb
- The ActivationClassBuilder for the class being builtmb
- The method for the generated code to go into- Throws:
StandardException
- Thrown on error
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decrementLevel
void decrementLevel(int decrement)
Description copied from class:ResultSetNode
Decrement (query block) level (0-based) for all of the tables in this ResultSet tree. This is useful when flattening a subquery.- Specified by:
decrementLevel
in classResultSetNode
- Parameters:
decrement
- The amount to decrement by.
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