public abstract class Relation
extends java.lang.Object
| Modifier and Type | Field and Description |
|---|---|
protected Operator |
relationType |
| Constructor and Description |
|---|
Relation() |
| Modifier and Type | Method and Description |
|---|---|
boolean |
isContains()
Checks if the operator of this relation is a
CONTAINS. |
boolean |
isContainsKey()
Checks if the operator of this relation is a
CONTAINS_KEY. |
boolean |
isEQ()
Checks if the operator of this relation is a
EQ. |
boolean |
isIN()
Checks if the operator of this relation is a
IN. |
boolean |
isMultiColumn()
Checks if this relation apply to multiple columns.
|
boolean |
isSlice()
Checks if the operator of this relation is a
Slice (GT, GTE, LTE, LT). |
protected abstract Restriction |
newContainsRestriction(CFMetaData cfm,
VariableSpecifications boundNames,
boolean isKey)
Creates a new Contains restriction instance.
|
protected abstract Restriction |
newEQRestriction(CFMetaData cfm,
VariableSpecifications boundNames)
Creates a new EQ restriction instance.
|
protected abstract Restriction |
newINRestriction(CFMetaData cfm,
VariableSpecifications boundNames)
Creates a new IN restriction instance.
|
protected abstract Restriction |
newSliceRestriction(CFMetaData cfm,
VariableSpecifications boundNames,
Bound bound,
boolean inclusive)
Creates a new Slice restriction instance.
|
boolean |
onToken()
Checks if this relation is a token relation (e.g.
|
Operator |
operator() |
protected ColumnDefinition |
toColumnDefinition(CFMetaData cfm,
ColumnIdentifier.Raw entity)
Converts the specified entity into a column definition.
|
Restriction |
toRestriction(CFMetaData cfm,
VariableSpecifications boundNames)
Converts this
Relation into a Restriction. |
protected abstract Term |
toTerm(java.util.List<? extends ColumnSpecification> receivers,
Term.Raw raw,
java.lang.String keyspace,
VariableSpecifications boundNames)
Converts the specified
Raw into a Term. |
protected java.util.List<Term> |
toTerms(java.util.List<? extends ColumnSpecification> receivers,
java.util.List<? extends Term.Raw> raws,
java.lang.String keyspace,
VariableSpecifications boundNames)
Converts the specified
Raw terms into a Terms. |
protected Operator relationType
public Operator operator()
public boolean isMultiColumn()
true if this relation apply to multiple columns, false otherwise.public boolean onToken()
token(a) = token(1)).
true if this relation is a token relation, false otherwise.public final boolean isContains()
CONTAINS.true if the operator of this relation is a CONTAINS, false
otherwise.public final boolean isContainsKey()
CONTAINS_KEY.true if the operator of this relation is a CONTAINS_KEY, false
otherwise.public final boolean isIN()
IN.true if the operator of this relation is a IN, false
otherwise.public final boolean isEQ()
EQ.true if the operator of this relation is a EQ, false
otherwise.public final boolean isSlice()
Slice (GT, GTE, LTE, LT).true if the operator of this relation is a Slice, false otherwise.public final Restriction toRestriction(CFMetaData cfm, VariableSpecifications boundNames) throws InvalidRequestException
Relation into a Restriction.cfm - the Column Family meta databoundNames - the variables specification where to collect the bind variablesRestriction corresponding to this RelationInvalidRequestException - if this Relation is not validprotected abstract Restriction newEQRestriction(CFMetaData cfm, VariableSpecifications boundNames) throws InvalidRequestException
cfm - the Column Family meta databoundNames - the variables specification where to collect the bind variablesInvalidRequestException - if the relation cannot be converted into an EQ restriction.protected abstract Restriction newINRestriction(CFMetaData cfm, VariableSpecifications boundNames) throws InvalidRequestException
cfm - the Column Family meta databoundNames - the variables specification where to collect the bind variablesInvalidRequestException - if the relation cannot be converted into an IN restriction.protected abstract Restriction newSliceRestriction(CFMetaData cfm, VariableSpecifications boundNames, Bound bound, boolean inclusive) throws InvalidRequestException
cfm - the Column Family meta databoundNames - the variables specification where to collect the bind variablesbound - the slice boundinclusive - true if the bound is included.InvalidRequestException - if the Relation is not validprotected abstract Restriction newContainsRestriction(CFMetaData cfm, VariableSpecifications boundNames, boolean isKey) throws InvalidRequestException
cfm - the Column Family meta databoundNames - the variables specification where to collect the bind variablesisKey - true if the restriction to create is a CONTAINS KEYRestriction instanceInvalidRequestException - if the Relation is not validprotected abstract Term toTerm(java.util.List<? extends ColumnSpecification> receivers, Term.Raw raw, java.lang.String keyspace, VariableSpecifications boundNames) throws InvalidRequestException
Raw into a Term.receivers - the columns to which the values must be associated atraw - the raw term to convertkeyspace - the keyspace nameboundNames - the variables specification where to collect the bind variablesTerm corresponding to the specified RawInvalidRequestException - if the Raw term is not validprotected final java.util.List<Term> toTerms(java.util.List<? extends ColumnSpecification> receivers, java.util.List<? extends Term.Raw> raws, java.lang.String keyspace, VariableSpecifications boundNames) throws InvalidRequestException
Raw terms into a Terms.receivers - the columns to which the values must be associated atraws - the raw terms to convertkeyspace - the keyspace nameboundNames - the variables specification where to collect the bind variablesTerms corresponding to the specified Raw termsInvalidRequestException - if the Raw terms are not validprotected final ColumnDefinition toColumnDefinition(CFMetaData cfm, ColumnIdentifier.Raw entity) throws InvalidRequestException
cfm - the column family meta dataentity - the entity to convertInvalidRequestException - if the entity cannot be recognizedCopyright © 2015 The Apache Software Foundation