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Fix bool query behaviour on null value #56817

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merged 3 commits into from
May 26, 2020
Merged

Fix bool query behaviour on null value #56817

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4f5ed9e
Fix `minimum_should_match` behaviour on null value
May 15, 2020
e2a43cd
Merge branch 'master' into fix-56812
May 26, 2020
0804f08
Also allow must, must_not, should and filter fields to be `null`
May 26, 2020
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18 changes: 18 additions & 0 deletions libs/x-content/src/main/java/org/elasticsearch/common/xcontent/AbstractObjectParser.java
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Original file line number Diff line number Diff line change
Expand Up @@ -240,6 +240,24 @@ public <T> void declareObjectArray(BiConsumer<Value, List<T>> consumer, ContextP
declareFieldArray(consumer, (p, c) -> objectParser.parse(p, c), field, ValueType.OBJECT_ARRAY);
}

/**
* like {@link #declareObjectArray(BiConsumer, ContextParser, ParseField)}, but can also handle single null values,
* in which case the consumer isn't called
*/
public <
T> void declareObjectArrayOrNull(
BiConsumer<Value, List<T>> consumer,
ContextParser<Context, T> objectParser,
ParseField field
) {
declareField(
(value, list) -> { if (list != null) consumer.accept(value, list); },
(p, c) -> p.currentToken() == XContentParser.Token.VALUE_NULL ? null : parseArray(p, () -> objectParser.parse(p, c)),
field,
ValueType.OBJECT_ARRAY_OR_NULL
);
}

public void declareStringArray(BiConsumer<Value, List<String>> consumer, ParseField field) {
declareFieldArray(consumer, (p, c) -> p.text(), field, ValueType.STRING_ARRAY);
}
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1 change: 1 addition & 0 deletions libs/x-content/src/main/java/org/elasticsearch/common/xcontent/ObjectParser.java
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Expand Up @@ -641,6 +641,7 @@ public enum ValueType {
OBJECT(START_OBJECT),
OBJECT_OR_NULL(START_OBJECT, VALUE_NULL),
OBJECT_ARRAY(START_OBJECT, START_ARRAY),
OBJECT_ARRAY_OR_NULL(START_OBJECT, START_ARRAY, VALUE_NULL),
OBJECT_OR_BOOLEAN(START_OBJECT, VALUE_BOOLEAN),
OBJECT_OR_STRING(START_OBJECT, VALUE_STRING),
OBJECT_OR_LONG(START_OBJECT, VALUE_NUMBER),
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10 changes: 5 additions & 5 deletions server/src/main/java/org/elasticsearch/index/query/BoolQueryBuilder.java
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Expand Up @@ -273,16 +273,16 @@ private static void doXArrayContent(ParseField field, List<QueryBuilder> clauses

private static final ObjectParser<BoolQueryBuilder, Void> PARSER = new ObjectParser<>("bool", BoolQueryBuilder::new);
static {
PARSER.declareObjectArray((builder, clauses) -> clauses.forEach(builder::must), (p, c) -> parseInnerQueryBuilder(p),
PARSER.declareObjectArrayOrNull((builder, clauses) -> clauses.forEach(builder::must), (p, c) -> parseInnerQueryBuilder(p),
MUST);
PARSER.declareObjectArray((builder, clauses) -> clauses.forEach(builder::should), (p, c) -> parseInnerQueryBuilder(p),
PARSER.declareObjectArrayOrNull((builder, clauses) -> clauses.forEach(builder::should), (p, c) -> parseInnerQueryBuilder(p),
SHOULD);
PARSER.declareObjectArray((builder, clauses) -> clauses.forEach(builder::mustNot), (p, c) -> parseInnerQueryBuilder(p),
PARSER.declareObjectArrayOrNull((builder, clauses) -> clauses.forEach(builder::mustNot), (p, c) -> parseInnerQueryBuilder(p),
MUST_NOT);
PARSER.declareObjectArray((builder, clauses) -> clauses.forEach(builder::filter), (p, c) -> parseInnerQueryBuilder(p),
PARSER.declareObjectArrayOrNull((builder, clauses) -> clauses.forEach(builder::filter), (p, c) -> parseInnerQueryBuilder(p),
FILTER);
PARSER.declareBoolean(BoolQueryBuilder::adjustPureNegative, ADJUST_PURE_NEGATIVE);
PARSER.declareField(BoolQueryBuilder::minimumShouldMatch, (p, c) -> p.text(),
PARSER.declareField(BoolQueryBuilder::minimumShouldMatch, (p, c) -> p.textOrNull(),
MINIMUM_SHOULD_MATCH, ObjectParser.ValueType.VALUE);
PARSER.declareString(BoolQueryBuilder::queryName, NAME_FIELD);
PARSER.declareFloat(BoolQueryBuilder::boost, BOOST_FIELD);
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30 changes: 30 additions & 0 deletions server/src/test/java/org/elasticsearch/index/query/BoolQueryBuilderTests.java
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Expand Up @@ -284,6 +284,36 @@ public void testMinimumShouldMatchNumber() throws IOException {
assertEquals("1", builder.minimumShouldMatch());
}

public void testMinimumShouldMatchNull() throws IOException {
String query = "{\"bool\" : {\"must\" : { \"term\" : { \"field\" : \"value\" } }, \"minimum_should_match\" : null } }";
BoolQueryBuilder builder = (BoolQueryBuilder) parseQuery(query);
assertEquals(null, builder.minimumShouldMatch());
}

public void testMustNull() throws IOException {
String query = "{\"bool\" : {\"must\" : null } }";
BoolQueryBuilder builder = (BoolQueryBuilder) parseQuery(query);
assertTrue(builder.must().isEmpty());
}

public void testMustNotNull() throws IOException {
String query = "{\"bool\" : {\"must_not\" : null } }";
BoolQueryBuilder builder = (BoolQueryBuilder) parseQuery(query);
assertTrue(builder.mustNot().isEmpty());
}

public void testShouldNull() throws IOException {
String query = "{\"bool\" : {\"should\" : null } }";
BoolQueryBuilder builder = (BoolQueryBuilder) parseQuery(query);
assertTrue(builder.should().isEmpty());
}

public void testFilterNull() throws IOException {
String query = "{\"bool\" : {\"filter\" : null } }";
BoolQueryBuilder builder = (BoolQueryBuilder) parseQuery(query);
assertTrue(builder.filter().isEmpty());
}

/**
* test that unknown query names in the clauses throw an error
*/
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