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java.lang.Objectcom.mckoi.database.QueryPlan
public class QueryPlan
Various helper methods for constructing a plan tree, and the plan node implementations themselves.
Nested Class Summary | |
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static class |
QueryPlan.BranchQueryPlanNode
A QueryPlanNode that is a branch with two child nodes. |
static class |
QueryPlan.CachePointNode
A cache point node that only evaluates the child if the result can not be found in the cache with the given unique id. |
static class |
QueryPlan.CompositeNode
A branch node for performing a composite function on two child nodes. |
static class |
QueryPlan.ConstantSelectNode
The node for evaluating an expression that contains entirely constant values (no variables). |
static class |
QueryPlan.CreateFunctionsNode
The node for merging the child node with a set of new function columns over the entire result. |
static class |
QueryPlan.DistinctNode
The node for performing a distinct operation on the given columns of the child node. |
static class |
QueryPlan.EquiJoinNode
A branch node for equi-joining two tables together given two sets of columns. |
static class |
QueryPlan.ExhaustiveSelectNode
The node for performing a exhaustive select operation on the child node. |
static class |
QueryPlan.FetchTableNode
The node for fetching a table from the current transaction. |
static class |
QueryPlan.FetchViewNode
The node that fetches a view from the current connection. |
static class |
QueryPlan.FunctionalSelectNode
The node for performing a functional select operation on the child node. |
static class |
QueryPlan.GroupNode
The node for performing a grouping operation on the columns of the child node. |
static class |
QueryPlan.JoinNode
A branch node for a non-equi join between two tables. |
static class |
QueryPlan.LeftOuterJoinNode
A branch node for a left outer join. |
static class |
QueryPlan.LogicalUnionNode
A branch node for a logical union of two tables of identical types. |
static class |
QueryPlan.MarkerNode
A marker node that takes the result of a child and marks it as a name that can later be retrieved. |
static class |
QueryPlan.MultiColumnEquiSelectNode
The node for performing an equi-select on a group of columns of the child node. |
static class |
QueryPlan.NaturalJoinNode
A branch node for naturally joining two tables together. |
static class |
QueryPlan.NonCorrelatedAnyAllNode
A branch node for a non-correlated ANY or ALL sub-query evaluation. |
static class |
QueryPlan.RangeSelectNode
The node for performing a simple indexed query on a single column of the child node. |
static class |
QueryPlan.SimplePatternSelectNode
The node for evaluating a simple pattern search on a table which includes a single left hand variable or constant, a pattern type (LIKE, NOT LIKE or REGEXP), and a right hand constant (eg. |
static class |
QueryPlan.SimpleSelectNode
The node for performing a simple select operation on a table. |
static class |
QueryPlan.SingleQueryPlanNode
A QueryPlanNode with a single child. |
static class |
QueryPlan.SingleRowTableNode
A node for creating a table with a single row. |
static class |
QueryPlan.SortNode
The node for performing a sort operation on the given columns of the child node. |
static class |
QueryPlan.SubsetNode
The node for finding a subset and renaming the columns of the results in the child node. |
Constructor Summary | |
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QueryPlan()
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Method Summary |
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public QueryPlan()
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