Uses of Class
org.apache.jena.sparql.algebra.TransformCopy

Packages that use TransformCopy

Package	Description
org.apache.jena.sparql.algebra
org.apache.jena.sparql.algebra.optimize
org.apache.jena.sparql.engine.iterator

Uses of TransformCopy in org.apache.jena.sparql.algebra

Subclasses of TransformCopy in org.apache.jena.sparql.algebra

Modifier and Type	Class	Description
class	TransformGraphRename	Rename quad form alegbra
class	TransformQuadBlockGraph	Transform that rewrites an algebra into quadblock form
class	TransformQuadGraph	Transform that rewrites an algebra into quad form
class	TransformUnionQuery	Convert query in algebra form so that the default graph of the query is the union of named graphs

Uses of TransformCopy in org.apache.jena.sparql.algebra.optimize

Subclasses of TransformCopy in org.apache.jena.sparql.algebra.optimize

Modifier and Type	Class	Description
class	TransformDistinctToReduced	Transforms generic DISTINCT plus ORDER BY combinations to REDUCED plus ORDER BY which typically gives better performance and memory consumption because engines have to keep less data in-memory to evaluate it.
class	TransformEliminateAssignments	A transform that tries to in-line/eliminate assignments
class	TransformExpandOneOf
class	TransformExtendCombine	An optimizer that aims to combine multiple extend clauses together.
class	TransformFilterConjunction	Redo FILTER (A&&B) as FILTER(A) FILTER(B) (as an expr list).
class	TransformFilterDisjunction	Filter disjunction.
class	TransformFilterEquality	A transform that aims to optimize queries where there is an equality constraint on a variable to speed up evaluation e.g
class	TransformFilterImplicitJoin	Optimizer for transforming implicit joins.
class	TransformFilterInequality	A transform that aims to optimize queries where there is an inequality constraint on a variable in an attempt to speed up evaluation e.g
class	TransformFilterPlacement	Rewrite an algebra expression to put filters as close to their bound variables.
class	TransformFilterPlacementConservative	Rewrite an algebra expression to put filters as close to their bound variables in a BGP.
class	TransformImplicitLeftJoin	Optimizer for transforming implicit joins.
class	TransformJoinStrategy	Choose join strategy
class	TransformMergeBGPs	Merge BGPs, additionally merges the special OpTriple operator which is a BGP of a single triple pattern that may be introduced by other transforms (join BGP1 BGP2) => BGP (sequence ...BGP1 BGP2 ...)
class	TransformOrderByDistinctApplication	Improved optimization for ORDER BY plus DISTINCT or REDUCED combinations, see JENA-441 for original proposal and discussion.
class	TransformPathFlatten	Perform the equivalent of the transactions in the SPARQL 1.1 spec.
class	TransformPathFlattenAlgebra	The path transformation step mostly per the SPARQL 1.1 spec with some enhancement e.g. expanding alternative paths into unions.
class	TransformPattern2Join	Expand basic graph patterns and quad patterns to joins of (triple) and (quad).
class	TransformPromoteTableEmpty	Optimizer that ensures that table empty is promoted as high up a query as is possible
class	TransformPropertyFunction	Rewrite to replace a property function property with the call to the property function implementation
class	TransformRemoveAssignment	A transform capable of removing assignments from the algebra tree
class	TransformRemoveLabels
class	TransformReorder	A Transformer that applies a reordering to all BGPs and Quad Patterns present in the algebra
class	TransformSimplify
class	TransformTopN	Optimization that changes queries that uses OFFSET/LIMIT and ORDER BY to execute using Top N: i.e. while executing, keep only the top N items seen.

Uses of TransformCopy in org.apache.jena.sparql.engine.iterator

Subclasses of TransformCopy in org.apache.jena.sparql.engine.iterator

Modifier and Type	Class	Description
static class	QueryIterLateral.TransformInject