Examples with ReadOperations org.neo4j.kernel.api.ReadOperations used on opensource projects

Example 1 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class GraphDbStructureGuide method showStructure.

private void showStructure(Statement statement, DbStructureVisitor visitor) {
    ReadOperations read = statement.readOperations();
    try {
        showTokens(visitor, read);
        showSchema(visitor, read);
        showStatistics(visitor, read);
    } catch (KernelException e) {
        throw new IllegalStateException("Kernel exception when traversing database schema structure and statistics.  This is not expected to happen.", e);
    }
}

Example 2 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class CompiledExpandUtilsTest method shouldUseGivenOrderIfItHasLowerDegreeWithTypes.

@Test
public void shouldUseGivenOrderIfItHasLowerDegreeWithTypes() throws EntityNotFoundException {
    // GIVEN
    ReadOperations readOperations = mock(ReadOperations.class);
    when(readOperations.nodeGetDegree(1L, Direction.OUTGOING, 1)).thenReturn(1);
    when(readOperations.nodeGetDegree(2L, Direction.INCOMING, 1)).thenReturn(3);
    // WHEN
    connectingRelationships(readOperations, 1L, Direction.OUTGOING, 2L, new int[] { 1 });
    // THEN
    verify(readOperations, times(1)).nodeGetRelationships(1L, Direction.OUTGOING, new int[] { 1 });
}

Example 3 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class CompiledExpandUtilsTest method shouldSwitchOrderIfItHasLowerDegree.

@Test
public void shouldSwitchOrderIfItHasLowerDegree() throws EntityNotFoundException {
    // GIVEN
    ReadOperations readOperations = mock(ReadOperations.class);
    when(readOperations.nodeGetDegree(1L, Direction.OUTGOING)).thenReturn(3);
    when(readOperations.nodeGetDegree(2L, Direction.INCOMING)).thenReturn(1);
    // WHEN
    connectingRelationships(readOperations, 1L, Direction.OUTGOING, 2L);
    // THEN
    verify(readOperations, times(1)).nodeGetRelationships(2L, Direction.INCOMING);
}

Example 4 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class CompiledExpandUtilsTest method shouldUseGivenOrderIfItHasLowerDegree.

@Test
public void shouldUseGivenOrderIfItHasLowerDegree() throws EntityNotFoundException {
    // GIVEN
    ReadOperations readOperations = mock(ReadOperations.class);
    when(readOperations.nodeGetDegree(1L, Direction.OUTGOING)).thenReturn(1);
    when(readOperations.nodeGetDegree(2L, Direction.INCOMING)).thenReturn(3);
    // WHEN
    connectingRelationships(readOperations, 1L, Direction.OUTGOING, 2L);
    // THEN
    verify(readOperations, times(1)).nodeGetRelationships(1L, Direction.OUTGOING);
}

Example 5 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class CompiledExpandUtilsTest method shouldSwitchOrderIfItHasLowerDegreeWithTypes.

@Test
public void shouldSwitchOrderIfItHasLowerDegreeWithTypes() throws EntityNotFoundException {
    // GIVEN
    ReadOperations readOperations = mock(ReadOperations.class);
    when(readOperations.nodeGetDegree(1L, Direction.OUTGOING, 1)).thenReturn(3);
    when(readOperations.nodeGetDegree(2L, Direction.INCOMING, 1)).thenReturn(1);
    // WHEN
    connectingRelationships(readOperations, 1L, Direction.OUTGOING, 2L, new int[] { 1 });
    // THEN
    verify(readOperations, times(1)).nodeGetRelationships(2L, Direction.INCOMING, new int[] { 1 });
}