Examples with PropertyCursor org.neo4j.internal.kernel.api.PropertyCursor used on opensource projects

Example 16 with PropertyCursor

use of org.neo4j.internal.kernel.api.PropertyCursor in project neo4j by neo4j.

the class RelationshipTransactionStateTestBase method propertyTypeShouldBeTxStateAware.

@Test
void propertyTypeShouldBeTxStateAware() throws Exception {
    // Given
    long relationship;
    try (KernelTransaction tx = beginTransaction()) {
        Write write = tx.dataWrite();
        int token = tx.tokenWrite().relationshipTypeGetOrCreateForName("R");
        relationship = write.relationshipCreate(write.nodeCreate(), token, write.nodeCreate());
        tx.commit();
    }
    // Then
    try (KernelTransaction tx = beginTransaction()) {
        try (RelationshipScanCursor relationships = tx.cursors().allocateRelationshipScanCursor(NULL);
            PropertyCursor properties = tx.cursors().allocatePropertyCursor(NULL, INSTANCE)) {
            tx.dataRead().singleRelationship(relationship, relationships);
            assertTrue(relationships.next());
            assertFalse(hasProperties(relationships, tx));
            int prop = tx.tokenWrite().propertyKeyGetOrCreateForName("prop");
            tx.dataWrite().relationshipSetProperty(relationship, prop, stringValue("foo"));
            relationships.properties(properties);
            assertTrue(properties.next());
            assertThat(properties.propertyType()).isEqualTo(ValueGroup.TEXT);
        }
    }
}

Example 17 with PropertyCursor

use of org.neo4j.internal.kernel.api.PropertyCursor in project neo4j by neo4j.

the class RelationshipEntity method hasProperty.

@Override
public boolean hasProperty(String key) {
    if (null == key) {
        return false;
    }
    KernelTransaction transaction = internalTransaction.kernelTransaction();
    int propertyKey = transaction.tokenRead().propertyKey(key);
    if (propertyKey == TokenRead.NO_TOKEN) {
        return false;
    }
    RelationshipScanCursor relationships = transaction.ambientRelationshipCursor();
    PropertyCursor properties = transaction.ambientPropertyCursor();
    singleRelationship(transaction, relationships);
    relationships.properties(properties);
    return properties.seekProperty(propertyKey);
}

Example 18 with PropertyCursor

use of org.neo4j.internal.kernel.api.PropertyCursor in project neo4j by neo4j.

the class RelationshipEntity method getPropertyKeys.

@Override
public Iterable<String> getPropertyKeys() {
    KernelTransaction transaction = internalTransaction.kernelTransaction();
    List<String> keys = new ArrayList<>();
    try {
        RelationshipScanCursor relationships = transaction.ambientRelationshipCursor();
        PropertyCursor properties = transaction.ambientPropertyCursor();
        singleRelationship(transaction, relationships);
        TokenRead token = transaction.tokenRead();
        relationships.properties(properties);
        while (properties.next()) {
            keys.add(token.propertyKeyName(properties.propertyKey()));
        }
    } catch (PropertyKeyIdNotFoundKernelException e) {
        throw new IllegalStateException("Property key retrieved through kernel API should exist.", e);
    }
    return keys;
}

Example 19 with PropertyCursor

use of org.neo4j.internal.kernel.api.PropertyCursor in project neo4j by neo4j.

the class RelationshipEntity method getAllProperties.

@Override
public Map<String, Object> getAllProperties() {
    KernelTransaction transaction = internalTransaction.kernelTransaction();
    PropertyCursor propertyCursor = transaction.ambientPropertyCursor();
    return getAllProperties(propertyCursor);
}

Example 20 with PropertyCursor

use of org.neo4j.internal.kernel.api.PropertyCursor in project neo4j by neo4j.

the class RelationshipEntity method getProperty.

@Override
public Object getProperty(String key) {
    if (null == key) {
        throw new IllegalArgumentException("(null) property key is not allowed");
    }
    KernelTransaction transaction = internalTransaction.kernelTransaction();
    int propertyKey = transaction.tokenRead().propertyKey(key);
    if (propertyKey == TokenRead.NO_TOKEN) {
        throw new NotFoundException(format("No such property, '%s'.", key));
    }
    RelationshipScanCursor relationships = transaction.ambientRelationshipCursor();
    PropertyCursor properties = transaction.ambientPropertyCursor();
    singleRelationship(transaction, relationships);
    relationships.properties(properties);
    if (!properties.seekProperty(propertyKey)) {
        throw new NotFoundException(format("No such property, '%s'.", key));
    }
    return properties.propertyValue().asObjectCopy();
}