org.apache.druid.query.filter.vector

Class ObjectVectorValueMatcher

java.lang.Object

org.apache.druid.query.filter.vector.ObjectVectorValueMatcher

All Implemented Interfaces:

VectorValueMatcherFactory

public class ObjectVectorValueMatcher
extends Object
implements VectorValueMatcherFactory

Generic object matcher on top of a VectorObjectSelector. String object selectors specifically should use StringObjectVectorValueMatcher instead. Note that this matcher currently will always behave as a nil matcher when used with a string matcher, since there is not enough machinery in place to allow custom comparison of string values against arbitrary array or complex types. In other words, how do we compare a string value from a selector filter against an array or a sketch? The short answer is we can't right now. Perhaps complex type serde could be extended to provide a string matcher to handle the complex type case? For array types, we might consider creating a different filter (which would also be an option for complex 'selectors'), or extending selector to support arrays of values.

Field Summary

Fields

Modifier and Type	Field and Description
protected VectorObjectSelector	selector

Constructor Summary

Constructors

Constructor and Description
ObjectVectorValueMatcher(VectorObjectSelector selector)

Method Summary

Modifier and Type	Method and Description
VectorValueMatcher	makeMatcher(DruidPredicateFactory predicateFactory)
VectorValueMatcher	makeMatcher(String value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.query.filter.vector.VectorValueMatcherFactory

makeNullValueMatcher

Field Detail

selector

protected final VectorObjectSelector selector

Constructor Detail

ObjectVectorValueMatcher

public ObjectVectorValueMatcher(VectorObjectSelector selector)

Method Detail

makeMatcher

public VectorValueMatcher makeMatcher(@Nullable
                                      String value)

Specified by:

makeMatcher in interface VectorValueMatcherFactory

makeMatcher

public VectorValueMatcher makeMatcher(DruidPredicateFactory predicateFactory)

Specified by:

makeMatcher in interface VectorValueMatcherFactory