Package org.apache.calcite.util.mapping
Class Mappings.OverridingTargetMapping
- java.lang.Object
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- org.apache.calcite.util.mapping.Mappings.AbstractMapping
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- org.apache.calcite.util.mapping.Mappings.OverridingTargetMapping
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- All Implemented Interfaces:
java.lang.Iterable<IntPair>
,Mapping
,Mappings.CoreMapping
,Mappings.FunctionMapping
,Mappings.SourceMapping
,Mappings.TargetMapping
- Enclosing class:
- Mappings
public static class Mappings.OverridingTargetMapping extends Mappings.AbstractMapping implements Mappings.TargetMapping
Target mapping that returns the same result as a parentMappings.TargetMapping
except for specific overriding elements.
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Field Summary
Fields Modifier and Type Field Description private Mappings.TargetMapping
parent
private int
source
private int
target
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Constructor Summary
Constructors Constructor Description OverridingTargetMapping(Mappings.TargetMapping parent, int target, int source)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Removes all elements in the mapping.MappingType
getMappingType()
Returns the mapping type.int
getTarget(int source)
Returns the target that a source maps to.Mapping
inverse()
boolean
isIdentity()
Returns whether this mapping is the identity.java.util.Iterator<IntPair>
iterator()
Returns an iterator over the elements in this mapping.void
set(int source, int target)
int
size()
Returns the number of elements in the mapping.-
Methods inherited from class org.apache.calcite.util.mapping.Mappings.AbstractMapping
getSource, getSourceCount, getSourceOpt, getTargetCount, getTargetOpt, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.calcite.util.mapping.Mappings.TargetMapping
getSourceCount, getSourceOpt, getTargetCount, getTargetOpt
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Field Detail
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parent
private final Mappings.TargetMapping parent
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target
private final int target
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source
private final int source
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Constructor Detail
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OverridingTargetMapping
public OverridingTargetMapping(Mappings.TargetMapping parent, int target, int source)
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Method Detail
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clear
public void clear()
Description copied from interface:Mapping
Removes all elements in the mapping.
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size
public int size()
Description copied from interface:Mappings.CoreMapping
Returns the number of elements in the mapping.- Specified by:
size
in interfaceMapping
- Specified by:
size
in interfaceMappings.CoreMapping
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set
public void set(int source, int target)
- Specified by:
set
in interfaceMappings.TargetMapping
- Overrides:
set
in classMappings.AbstractMapping
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inverse
public Mapping inverse()
- Specified by:
inverse
in interfaceMappings.SourceMapping
- Specified by:
inverse
in interfaceMappings.TargetMapping
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getMappingType
public MappingType getMappingType()
Description copied from interface:Mappings.CoreMapping
Returns the mapping type.- Specified by:
getMappingType
in interfaceMapping
- Specified by:
getMappingType
in interfaceMappings.CoreMapping
- Specified by:
getMappingType
in interfaceMappings.FunctionMapping
- Specified by:
getMappingType
in interfaceMappings.SourceMapping
- Returns:
- Mapping type
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isIdentity
public boolean isIdentity()
Description copied from interface:Mapping
Returns whether this mapping is the identity.- Specified by:
isIdentity
in interfaceMapping
- Specified by:
isIdentity
in interfaceMappings.SourceMapping
- Overrides:
isIdentity
in classMappings.AbstractMapping
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getTarget
public int getTarget(int source)
Description copied from interface:Mappings.FunctionMapping
Returns the target that a source maps to.- Specified by:
getTarget
in interfaceMappings.FunctionMapping
- Specified by:
getTarget
in interfaceMappings.TargetMapping
- Overrides:
getTarget
in classMappings.AbstractMapping
- Parameters:
source
- source- Returns:
- target
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