IndexPredicate (Gerrit Review Plugin API Documentation)

java.lang.Object
- com.google.gerrit.index.query.Predicate<T>
- - com.google.gerrit.index.query.OperatorPredicate<I>
  - - com.google.gerrit.index.query.IndexPredicate<I>

All Implemented Interfaces:

Matchable<I>

Direct Known Subclasses:

ChangeIndexPredicate, IntegerRangePredicate, RegexPredicate, TimestampRangePredicate
```
public abstract class IndexPredicate<I>
extends OperatorPredicate<I>
implements Matchable<I>
```
Predicate that is mapped to a field in the index.

Field Summary
- Fields inherited from class com.google.gerrit.index.query.OperatorPredicate
  name, value

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`IndexPredicate(FieldDef<I,?> def, String value)`
`protected`	`IndexPredicate(FieldDef<I,?> def, String name, String value)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getCost()`	Returns a cost estimate to run this predicate, higher figures cost more.
`FieldDef<I,?>`	`getField()`
`FieldType<?>`	`getType()`
`boolean`	`match(I doc)`	This method matches documents without calling an index subsystem.

Methods inherited from class com.google.gerrit.index.query.OperatorPredicate
copy, equals, getOperator, getValue, hashCode, toString

Methods inherited from class com.google.gerrit.index.query.Predicate
and, and, any, asMatchable, estimateCost, getChild, getChildCount, getChildren, getFlattenedPredicateList, getLeafCount, getPredicateString, isLeaf, isMatchable, not, or, or, supportedForQueries

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - IndexPredicate
```
protected IndexPredicate(FieldDef<I,?> def,
                         String value)
```
  - IndexPredicate
```
protected IndexPredicate(FieldDef<I,?> def,
                         String name,
                         String value)
```
- Method Detail
  - getField
```
public FieldDef<I,?> getField()
```
  - getType
```
public FieldType<?> getType()
```
  - match
```
public boolean match(I doc)
```
    This method matches documents without calling an index subsystem. For primitive fields (e.g. integer, long) , the matching logic is consistent across this method and all known index implementations. For text fields (i.e. prefix and full-text) the semantics vary between this implementation and known index implementations:
  - Prefix: Lucene as well as match(Object) matches terms as true prefixes (prefix:foo -> `foo bar` matches, but `baz foo bar` does not match). The index implementation at Google tokenizes both the query and the indexed text and matches tokens individually (prefix:fo ba -> `baz foo bar` matches).
  - Full text: Lucene uses a PhraseQuery to search for terms in full text fields in-order. The index implementation at Google as well as match(Object) tokenizes both the query and the indexed text and matches tokens individually.

Specified by:: match in interface Matchable<I>
Returns:: true if the predicate matches the provided I.

getCost
```
public int getCost()
```
Description copied from interface: Matchable

Returns a cost estimate to run this predicate, higher figures cost more.

Specified by:

getCost in interface Matchable<I>