Package | Description |
---|---|
org.modeshape.jcr.query.lucene |
The core query engine, which currently uses Lucene for indexing and raw queries, and
the Hibernate Search engine (which does not depend on or use Hibernate Core or JPA)
for updating and querying the Lucene indexes.
|
org.modeshape.jcr.query.optimize |
This package contains the Optimizer interface, a rule-based optimizer implementation, and library of optimization rules.
|
org.modeshape.jcr.query.process |
This package defines the
QueryProcessor interface, which is responsible for constructing for each query
a tree of ProcessingComponent objects that each are responsible for processing a specific aspect of
the query and returning the tuples to the parent component. |
Class and Description |
---|
Optimizer
Interface for an optimizer.
|
Class and Description |
---|
AddAccessNodes
An
optimizer rule that inserts an ACCESS above each SOURCE leaf node in a query plan. |
AddJoinConditionColumnsToSources
An
OptimizerRule that adds any missing columns required by the join conditions to the appropriate join source. |
AddOrderingColumnsToSources
An
OptimizerRule that adds any missing columns required by the ordering specifications to the SORT node's PROJECT, and
to the appropriate access nodes. |
ChooseJoinAlgorithm
An
optimizer rule that choose the appropriate join algorithm and sets up any prerequisites, based upon
the JoinCondition . |
CopyCriteria
An
optimizer rule that copies SELECT nodes that apply to one side of a equi-join condition so that they
also apply to the other side fo the equi-join condition. |
Optimizer
Interface for an optimizer.
|
OptimizerRule
Interface that defines an
Optimizer rule. |
PushProjects
This rule attempts to ensure the proper location of
PlanNode.Type.PROJECT nodes. |
PushSelectCriteria
An
optimizer rule that attempts to push the criteria nodes in a canonical plan down as far as possible. |
RaiseSelectCriteria
An
optimizer rule that moves up higher in the plan any SELECT node that appears below a JOIN node and
that applies to selectors that are on the other side of the join. |
RaiseVariableName
An
optimizer rule that moves up higher in the plan any variable name
property to the node immediately under a dependent query node. |
RemoveEmptyAccessNodes
An
optimizer rule that removes any ACCESS nodes that are known to never return any tuples because of
conflicting constraints. |
ReplaceViews
An
optimizer rule that replaces any SOURCE nodes that happen to be views . |
RewriteAsRangeCriteria
An
optimizer rule that rewrites two AND-ed Constraint s that constraint a dynamic
operand to a range of values as a single Between constraint. |
RewriteIdentityJoins
An
optimizer rule that rewrites JOIN nodes that have equi-join criteria where
the columns involved in the equi-join are all identity columns (that is, they form a
key for the table). |
RewritePathAndNameCriteria
An
optimizer rule that rewrites Constraint trees, moving path-, name-, or depth-oriented criteria to the
left-most parts of the constraint tree. |
RewritePseudoColumns
An
optimizer rule that moves up higher in the plan any variable name
property to the node immediately under a dependent query node. |
RightOuterToLeftOuterJoins |
Class and Description |
---|
Optimizer
Interface for an optimizer.
|
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