Examples with IndexDescriptor org.neo4j.internal.schema.IndexDescriptor used on opensource projects

Example 86 with IndexDescriptor

use of org.neo4j.internal.schema.IndexDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldAcquireSchemaWriteLockBeforeRemovingIndexRuleBySchema.

@Test
void shouldAcquireSchemaWriteLockBeforeRemovingIndexRuleBySchema() throws Exception {
    // given
    IndexDescriptor index = IndexPrototype.forSchema(SchemaDescriptor.forLabel(0, 0)).withName("index").materialise(0);
    IndexProxy indexProxy = mock(IndexProxy.class);
    when(indexProxy.getDescriptor()).thenReturn(index);
    when(indexingService.getIndexProxy(index)).thenReturn(indexProxy);
    when(storageReader.indexGetForSchema(index.schema())).thenReturn(Iterators.iterator(index));
    when(storageReader.indexExists(index)).thenReturn(true);
    // when
    operations.indexDrop(index.schema());
    // then
    order.verify(locks).acquireExclusive(LockTracer.NONE, ResourceTypes.LABEL, 0);
    order.verify(txState).indexDoDrop(index);
}

Example 87 with IndexDescriptor

use of org.neo4j.internal.schema.IndexDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method indexedBackedConstraintCreateMustThrowOnAnyTokenSchemas.

@Test
void indexedBackedConstraintCreateMustThrowOnAnyTokenSchemas() throws Exception {
    // given
    SchemaDescriptor schema = SchemaDescriptor.forAnyEntityTokens(NODE);
    IndexPrototype prototype = IndexPrototype.uniqueForSchema(schema).withName("constraint name").withIndexProvider(GenericNativeIndexProvider.DESCRIPTOR);
    IndexDescriptor constraintIndex = prototype.materialise(42);
    when(constraintIndexCreator.createUniquenessConstraintIndex(any(), any(), eq(prototype))).thenReturn(constraintIndex);
    IndexProxy indexProxy = mock(IndexProxy.class);
    when(indexProxy.getDescriptor()).thenReturn(constraintIndex);
    when(indexingService.getIndexProxy(constraintIndex)).thenReturn(indexProxy);
    when(storageReader.constraintsGetForSchema(schema)).thenReturn(Collections.emptyIterator());
    when(storageReader.indexGetForSchema(schema)).thenReturn(Collections.emptyIterator());
    // when
    var e = assertThrows(KernelException.class, () -> operations.uniquePropertyConstraintCreate(prototype));
    assertThat(e.getUserMessage(tokenHolders)).contains("any token schema");
}

Example 88 with IndexDescriptor

use of org.neo4j.internal.schema.IndexDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldAcquireSchemaWriteLockBeforeDroppingConstraint.

@Test
void shouldAcquireSchemaWriteLockBeforeDroppingConstraint() throws Exception {
    // given
    UniquenessConstraintDescriptor constraint = uniqueForSchema(schema).withName("constraint");
    IndexDescriptor index = IndexPrototype.uniqueForSchema(schema).withName("constraint").materialise(13);
    storageReaderWithConstraints(constraint);
    when(storageReader.indexExists(index)).thenReturn(true);
    when(storageReader.indexGetForName("constraint")).thenReturn(index);
    // when
    operations.constraintDrop(constraint);
    // then
    order.verify(locks).acquireExclusive(LockTracer.NONE, ResourceTypes.LABEL, schema.getLabelId());
    order.verify(txState).constraintDoDrop(constraint);
    order.verify(txState).indexDoDrop(index);
}

Example 89 with IndexDescriptor

use of org.neo4j.internal.schema.IndexDescriptor in project neo4j by neo4j.

the class BuiltInProcedures method listIndexes.

@Deprecated(since = "4.2.0", forRemoval = true)
@SystemProcedure
@Description("List all indexes in the database.")
@Procedure(name = "db.indexes", mode = READ, deprecatedBy = "SHOW INDEXES command")
public Stream<IndexResult> listIndexes() {
    if (callContext.isSystemDatabase()) {
        return Stream.empty();
    }
    TokenRead tokenRead = kernelTransaction.tokenRead();
    IndexingService indexingService = resolver.resolveDependency(IndexingService.class);
    SchemaReadCore schemaRead = kernelTransaction.schemaRead().snapshot();
    List<IndexDescriptor> indexes = asList(schemaRead.indexesGetAll());
    List<IndexResult> result = new ArrayList<>();
    for (IndexDescriptor index : indexes) {
        IndexResult indexResult;
        indexResult = asIndexResult(tokenRead, schemaRead, index);
        result.add(indexResult);
    }
    result.sort(Comparator.comparing(r -> r.name));
    return result.stream();
}

Example 90 with IndexDescriptor

use of org.neo4j.internal.schema.IndexDescriptor in project neo4j by neo4j.

the class FulltextProcedures method queryFulltextForRelationships.

@SystemProcedure
@Description("Query the given full-text index. Returns the matching relationships, and their Lucene query score, ordered by score. " + "Valid keys for the options map are: 'skip' to skip the top N results; 'limit' to limit the number of results returned.")
@Procedure(name = "db.index.fulltext.queryRelationships", mode = READ)
public Stream<RelationshipOutput> queryFulltextForRelationships(@Name("indexName") String name, @Name("queryString") String query, @Name(value = "options", defaultValue = "{}") Map<String, Object> options) throws Exception {
    if (callContext.isSystemDatabase()) {
        return Stream.empty();
    }
    IndexDescriptor indexReference = getValidIndex(name);
    awaitOnline(indexReference);
    EntityType entityType = indexReference.schema().entityType();
    if (entityType != RELATIONSHIP) {
        throw new IllegalArgumentException("The '" + name + "' index (" + indexReference + ") is an index on " + entityType + ", so it cannot be queried for relationships.");
    }
    RelationshipValueIndexCursor cursor = tx.cursors().allocateRelationshipValueIndexCursor(tx.cursorContext(), tx.memoryTracker());
    IndexReadSession indexReadSession = tx.dataRead().indexReadSession(indexReference);
    IndexQueryConstraints constraints = queryConstraints(options);
    tx.dataRead().relationshipIndexSeek(indexReadSession, cursor, constraints, PropertyIndexQuery.fulltextSearch(query));
    Spliterator<RelationshipOutput> spliterator = new SpliteratorAdaptor<>() {

        @Override
        public boolean tryAdvance(Consumer<? super RelationshipOutput> action) {
            while (cursor.next()) {
                long relationshipReference = cursor.relationshipReference();
                float score = cursor.score();
                RelationshipOutput relationshipOutput = RelationshipOutput.forExistingEntityOrNull(transaction, relationshipReference, score);
                if (relationshipOutput != null) {
                    action.accept(relationshipOutput);
                    return true;
                }
            }
            cursor.close();
            return false;
        }
    };
    return StreamSupport.stream(spliterator, false).onClose(cursor::close);
}