Examples with StorageSchemaReader org.neo4j.storageengine.api.StorageSchemaReader used on opensource projects

Example 1 with StorageSchemaReader

use of org.neo4j.storageengine.api.StorageSchemaReader in project neo4j by neo4j.

the class RecordStorageReaderSchemaTest method shouldListAllIndexesForRelationshipTypeAtTimeOfSnapshot.

@Test
void shouldListAllIndexesForRelationshipTypeAtTimeOfSnapshot() throws Exception {
    // Given
    IndexDescriptor expectedIndex = createIndex(relType1, propertyKey);
    createIndex(relType2, propertyKey);
    // When
    StorageSchemaReader snapshot = storageReader.schemaSnapshot();
    Set<IndexDescriptor> indexes = asSet(snapshot.indexesGetForRelationshipType(relationshipTypeId(relType1)));
    // Then
    assertEquals(asSet(expectedIndex), indexes);
}

Example 2 with StorageSchemaReader

use of org.neo4j.storageengine.api.StorageSchemaReader in project neo4j by neo4j.

the class RecordStorageReaderSchemaTest method shouldListAllConstraintsForLabelAtTimeOfSnapshot.

@Test
void shouldListAllConstraintsForLabelAtTimeOfSnapshot() throws Exception {
    // Given
    createUniquenessConstraint(label1, propertyKey);
    createUniquenessConstraint(label2, propertyKey);
    // When
    StorageSchemaReader snapshot = storageReader.schemaSnapshot();
    createUniquenessConstraint(label1, otherPropertyKey);
    Set<ConstraintDescriptor> constraints = asSet(snapshot.constraintsGetForLabel(labelId(label1)));
    // Then
    Set<ConstraintDescriptor> expectedConstraints = asSet(uniqueConstraintDescriptor(label1, propertyKey));
    assertEquals(expectedConstraints, constraints);
}

Example 3 with StorageSchemaReader

use of org.neo4j.storageengine.api.StorageSchemaReader in project neo4j by neo4j.

the class AllStoreHolder method snapshot.

@Override
public SchemaReadCore snapshot() {
    ktx.assertOpen();
    StorageSchemaReader snapshot = storageReader.schemaSnapshot();
    return new SchemaReadCoreSnapshot(snapshot, ktx, this);
}

Example 4 with StorageSchemaReader

use of org.neo4j.storageengine.api.StorageSchemaReader in project neo4j by neo4j.

the class AllStoreHolder method indexGetForName.

IndexDescriptor indexGetForName(StorageSchemaReader reader, String name) {
    ktx.assertOpen();
    IndexDescriptor index = reader.indexGetForName(name);
    if (ktx.hasTxStateWithChanges()) {
        Predicate<IndexDescriptor> namePredicate = indexDescriptor -> indexDescriptor.getName().equals(name);
        Iterator<IndexDescriptor> indexes = ktx.txState().indexChanges().filterAdded(namePredicate).apply(Iterators.iterator(index));
        index = singleOrNull(indexes);
    }
    return lockIndex(index);
}

Example 5 with StorageSchemaReader

use of org.neo4j.storageengine.api.StorageSchemaReader in project neo4j by neo4j.

the class AllStoreHolder method constraintGetForName.

ConstraintDescriptor constraintGetForName(StorageSchemaReader reader, String name) {
    ktx.assertOpen();
    ConstraintDescriptor constraint = reader.constraintGetForName(name);
    if (ktx.hasTxStateWithChanges()) {
        Predicate<ConstraintDescriptor> namePredicate = constraintDescriptor -> constraintDescriptor.getName().equals(name);
        Iterator<ConstraintDescriptor> constraints = ktx.txState().constraintsChanges().filterAdded(namePredicate).apply(Iterators.iterator(constraint));
        constraint = singleOrNull(constraints);
    }
    return lockConstraint(constraint);
}