Class POperation
- java.lang.Object
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- org.eclipse.viatra.query.runtime.matchers.planning.operations.POperation
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- Direct Known Subclasses:
PApply,PEnumerate,PJoin,PProject,PStart
public abstract class POperation extends java.lang.ObjectAbstract superclass for representing a high-level query evaluation operation.Subclasses correspond to various POperations modeled after relational algebra.
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Constructor Summary
Constructors Constructor Description POperation()
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description voidcheckConsistency(SubPlan subPlan)Checks whether this constraint can be properly applied at the given SubPlan.abstract java.util.Set<? extends PConstraint>getDeltaConstraints()Newly enforced constraintsabstract java.lang.StringgetShortName()abstract intnumParentSubPlans()java.lang.StringtoString()
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Method Detail
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getDeltaConstraints
public abstract java.util.Set<? extends PConstraint> getDeltaConstraints()
Newly enforced constraints
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getShortName
public abstract java.lang.String getShortName()
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numParentSubPlans
public abstract int numParentSubPlans()
- Returns:
- the number of SubPlans that must be specified as parents
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checkConsistency
public void checkConsistency(SubPlan subPlan)
Checks whether this constraint can be properly applied at the given SubPlan.
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toString
public java.lang.String toString()
- Overrides:
toStringin classjava.lang.Object
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