com.apple.foundationdb.record.query.plan.temp.matchers

Class TypeWithPredicateMatcher<T extends RelationalExpressionWithPredicate>

java.lang.Object

com.apple.foundationdb.record.query.plan.temp.matchers.TypeMatcher<T>

com.apple.foundationdb.record.query.plan.temp.matchers.TypeWithPredicateMatcher<T>

Type Parameters:

T - the type of RelationalExpressionWithPredicate to match against

All Implemented Interfaces:

ExpressionMatcher<T>

public class TypeWithPredicateMatcher<T extends RelationalExpressionWithPredicate>
extends TypeMatcher<T>

Matches a subclass of RelationalExpressionWithPredicate with a given predicate (as determined by RelationalExpressionWithPredicate.getPredicate() and a given matcher against the children.

Method Summary

Modifier and Type	Method and Description
Stream<PlannerBindings>	matchWith(RelationalExpression expression) Attempt to match this matcher against the given expression reference.
static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U>	ofPredicate(Class<? extends U> expressionClass, ExpressionMatcher<? extends QueryPredicate> predicateMatcher)
static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U>	ofPredicate(Class<? extends U> expressionClass, ExpressionMatcher<? extends QueryPredicate> predicateMatcher, ExpressionChildrenMatcher childrenMatcher)
static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U>	ofPredicate(Class<? extends U> expressionClass, ExpressionMatcher<? extends QueryPredicate> predicateMatcher, ExpressionMatcher<? extends Bindable>... children)

Methods inherited from class com.apple.foundationdb.record.query.plan.temp.matchers.TypeMatcher

getChildrenMatcher, getRootClass, matchWith, matchWith, of, of, of

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

matchWith

@Nonnull
public Stream<PlannerBindings> matchWith(@Nonnull
                                                  RelationalExpression expression)

Description copied from interface: ExpressionMatcher

Attempt to match this matcher against the given expression reference. Note that implementations of matchWith() should only attempt to match the given root with this planner expression and should not call into the ExpressionChildrenMatcher returned by ExpressionMatcher.getChildrenMatcher() or attempt to access children of the given expression.

Specified by:

matchWith in interface ExpressionMatcher<T extends RelationalExpressionWithPredicate>

Overrides:

matchWith in class TypeMatcher<T extends RelationalExpressionWithPredicate>

Parameters:

expression - a planner expression to match with

Returns:

a stream of PlannerBindings containing the matched bindings, or an empty stream is no match was found

ofPredicate

public static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U> ofPredicate(@Nonnull
                                                                                                    Class<? extends U> expressionClass,
                                                                                                    @Nonnull
                                                                                                    ExpressionMatcher<? extends QueryPredicate> predicateMatcher)

ofPredicate

@SafeVarargs
public static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U> ofPredicate(@Nonnull
                                                                                                                 Class<? extends U> expressionClass,
                                                                                                                 @Nonnull
                                                                                                                 ExpressionMatcher<? extends QueryPredicate> predicateMatcher,
                                                                                                                 @Nonnull
                                                                                                                 ExpressionMatcher<? extends Bindable>... children)

ofPredicate

public static <U extends RelationalExpressionWithPredicate> TypeWithPredicateMatcher<U> ofPredicate(@Nonnull
                                                                                                    Class<? extends U> expressionClass,
                                                                                                    @Nonnull
                                                                                                    ExpressionMatcher<? extends QueryPredicate> predicateMatcher,
                                                                                                    @Nonnull
                                                                                                    ExpressionChildrenMatcher childrenMatcher)