Package se.liu.ida.hefquin.engine.wrappers.lpg.query.impl

Class CypherMatchQueryImpl

java.lang.Object

se.liu.ida.hefquin.engine.wrappers.lpg.query.impl.CypherMatchQueryImpl

All Implemented Interfaces:

CypherMatchQuery, CypherQuery

public class CypherMatchQueryImpl
extends Object
implements CypherMatchQuery

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<BooleanCypherExpression>	conditions
protected final List<UnwindIterator>	iterators
protected final List<MatchClause>	matches
protected final List<AliasedExpression>	returnExprs

Constructor Summary

Constructors

Constructor	Description
CypherMatchQueryImpl()
CypherMatchQueryImpl(List<MatchClause> matches, List<BooleanCypherExpression> conditions, List<UnwindIterator> iterators, List<AliasedExpression> returnExprs)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
List<CypherVar>	getAliases()	Returns a list with the aliases of each of the AliasedExpression objects contained by this query
List<BooleanCypherExpression>	getConditions()	Obtains a list of conditions, such that their conjunction represents the condition imposed in the WHERE clause of the query.
List<UnwindIterator>	getIterators()	Obtains a list of iterator expressions, of the form list AS var, present on the query.
List<MatchClause>	getMatches()	Obtains the list of the patterns to be matched in the query.
Set<CypherVar>	getMatchVars()	Returns the set of variables that are defined in the MATCH clauses of this query.
List<AliasedExpression>	getReturnExprs()	Obtains a list of expressions with optional aliases that represent the columns being returned by the query.
Set<CypherVar>	getUvars()	Returns a Set with all the aliases of the UnwindIterator objects contained by this query
int	hashCode()
String	toString()	Returns a Cypher expression representing this query.

Methods inherited from class java.lang.Object

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

Field Details

matches

protected final List<MatchClause> matches

conditions

protected final List<BooleanCypherExpression> conditions

iterators

protected final List<UnwindIterator> iterators

returnExprs

protected final List<AliasedExpression> returnExprs

Constructor Details

CypherMatchQueryImpl

public CypherMatchQueryImpl()

CypherMatchQueryImpl

public CypherMatchQueryImpl(List<MatchClause> matches,
 List<BooleanCypherExpression> conditions,
 List<UnwindIterator> iterators,
 List<AliasedExpression> returnExprs)

Method Details

getMatches

public List<MatchClause> getMatches()

Description copied from interface: CypherMatchQuery

Obtains the list of the patterns to be matched in the query. For the example query, this method returns a list with 2 elements, one representing each MATCH statement.

Specified by:

getMatches in interface CypherMatchQuery

Returns:

a list of MatchClause objects

getConditions

public List<BooleanCypherExpression> getConditions()

Description copied from interface: CypherMatchQuery

Obtains a list of conditions, such that their conjunction represents the condition imposed in the WHERE clause of the query. For the example query, this method returns a list of 2 conditions, representing a:CLASS and b.property='value'.

Specified by:

getConditions in interface CypherMatchQuery

Returns:

a list of WhereCondition objects

getIterators

public List<UnwindIterator> getIterators()

Description copied from interface: CypherMatchQuery

Obtains a list of iterator expressions, of the form list AS var, present on the query. For the example query, this method returns a list of one iterator: KEYS(a) AS k

Specified by:

getIterators in interface CypherMatchQuery

Returns:

a list of UnwindIterator objects

getReturnExprs

public List<AliasedExpression> getReturnExprs()

Description copied from interface: CypherMatchQuery

Obtains a list of expressions with optional aliases that represent the columns being returned by the query. For the example query, this method returns a list with 2 elements, representing the 2 columns being returned

Specified by:

getReturnExprs in interface CypherMatchQuery

Returns:

a list of ReturnStatement objects

getAliases

public List<CypherVar> getAliases()

Description copied from interface: CypherMatchQuery

Returns a list with the aliases of each of the AliasedExpression objects contained by this query

Specified by:

getAliases in interface CypherMatchQuery

getUvars

public Set<CypherVar> getUvars()

Description copied from interface: CypherMatchQuery

Returns a Set with all the aliases of the UnwindIterator objects contained by this query

Specified by:

getUvars in interface CypherMatchQuery

getMatchVars

public Set<CypherVar> getMatchVars()

Description copied from interface: CypherQuery

Returns the set of variables that are defined in the MATCH clauses of this query.

Specified by:

getMatchVars in interface CypherQuery

toString

public String toString()

Description copied from interface: CypherQuery

Returns a Cypher expression representing this query.

Specified by:

toString in interface CypherQuery

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object