Examples with KernelStatement org.neo4j.kernel.impl.api.KernelStatement used on opensource projects

Example 26 with KernelStatement

use of org.neo4j.kernel.impl.api.KernelStatement in project neo4j by neo4j.

the class NeoStoresTest method deleteRelationships.

private void deleteRelationships(long nodeId) throws Exception {
    try (KernelStatement statement = (KernelStatement) tx.acquireStatement();
        Cursor<NodeItem> nodeCursor = statement.getStoreStatement().acquireSingleNodeCursor(nodeId)) {
        assertTrue(nodeCursor.next());
        NodeItem nodeItem = nodeCursor.get();
        statement.getStoreStatement().acquireNodeRelationshipCursor(nodeItem.isDense(), nodeItem.id(), nodeItem.nextRelationshipId(), BOTH, ALWAYS_TRUE_INT).forAll(rel -> relDelete(rel.id()));
    }
}

Example 27 with KernelStatement

use of org.neo4j.kernel.impl.api.KernelStatement in project neo4j by neo4j.

the class NeoStoresTest method assertHasRelationships.

private void assertHasRelationships(long node) {
    try (KernelStatement statement = (KernelStatement) tx.acquireStatement();
        Cursor<NodeItem> nodeCursor = statement.getStoreStatement().acquireSingleNodeCursor(node)) {
        nodeCursor.next();
        NodeItem nodeItem = nodeCursor.get();
        try (Cursor<RelationshipItem> relationships = statement.getStoreStatement().acquireNodeRelationshipCursor(nodeItem.isDense(), nodeItem.id(), nodeItem.nextRelationshipId(), BOTH, ALWAYS_TRUE_INT)) {
            assertTrue(relationships.next());
        }
    }
}

Example 28 with KernelStatement

use of org.neo4j.kernel.impl.api.KernelStatement in project neo4j by neo4j.

the class TransactionStateChecker method create.

public static TransactionStateChecker create(TransitionalPeriodTransactionMessContainer container) {
    KernelTransaction topLevelTransactionBoundToThisThread = container.getBridge().getTopLevelTransactionBoundToThisThread(true);
    KernelStatement kernelStatement = (KernelStatement) topLevelTransactionBoundToThisThread.acquireStatement();
    return new TransactionStateChecker(nodeId -> kernelStatement.hasTxStateWithChanges() && kernelStatement.txState().nodeIsDeletedInThisTx(nodeId), relId -> kernelStatement.hasTxStateWithChanges() && kernelStatement.txState().relationshipIsDeletedInThisTx(relId));
}