Module org.cojen.tupl

Package org.cojen.tupl.diag

Class QueryPlan.LoadOne

java.lang.Object

org.cojen.tupl.diag.QueryPlan

org.cojen.tupl.diag.QueryPlan.Table

org.cojen.tupl.diag.QueryPlan.LoadOne

All Implemented Interfaces:

Serializable

Enclosing class:

QueryPlan

public static final class QueryPlan.LoadOne
extends QueryPlan.Table

Query plan node which loads at most one row from a table.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.cojen.tupl.diag.QueryPlan

QueryPlan.Aggregator, QueryPlan.DisjointUnion, QueryPlan.Empty, QueryPlan.Exists, QueryPlan.Filter, QueryPlan.FullScan, QueryPlan.Grouper, QueryPlan.GroupSort, QueryPlan.Identity, QueryPlan.LoadOne, QueryPlan.Mapper, QueryPlan.NaturalJoin, QueryPlan.NestedLoopsJoin, QueryPlan.PrimaryJoin, QueryPlan.RangeScan, QueryPlan.RangeUnion, QueryPlan.Scan, QueryPlan.Set, QueryPlan.Sort, QueryPlan.Table, QueryPlan.Union

Field Summary

Fields

Modifier and Type	Field	Description
final String	filter

Fields inherited from class org.cojen.tupl.diag.QueryPlan.Table

keyColumns, table, which

Constructor Summary

Constructors

Constructor	Description
LoadOne(String table, String which, String[] keyColumns, String filter)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	hashCode()

Methods inherited from class org.cojen.tupl.diag.QueryPlan

appendTo, appendTo, printTo, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

filter

public final String filter

Constructor Details

LoadOne

public LoadOne(String table,
 String which,
 String[] keyColumns,
 String filter)

Parameters:

which - primary key, alternate key, or secondary index

keyColumns - columns with '+' or '-' prefix

filter - filter which matches to the row (filter can be null if unspecified)

Method Details

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class QueryPlan.Table