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

Example 16 with ReadOperations

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

the class PropertyIT method nodeHasPropertyIfSet.

@Test
public void nodeHasPropertyIfSet() throws Exception {
    // GIVEN
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    long nodeId = statement.dataWriteOperations().nodeCreate();
    // WHEN
    int propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("clown");
    statement.dataWriteOperations().nodeSetProperty(nodeId, stringProperty(propertyKeyId, "bozo"));
    // THEN
    assertThat(statement.readOperations().nodeHasProperty(nodeId, propertyKeyId), is(true));
    assertThat(statement.readOperations().nodeGetProperty(nodeId, propertyKeyId), notNullValue());
    // WHEN
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // THEN
    assertThat(readOperations.nodeHasProperty(nodeId, propertyKeyId), is(true));
    assertThat(readOperations.nodeGetProperty(nodeId, propertyKeyId), notNullValue());
}

Example 17 with ReadOperations

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

the class PropertyIT method shouldSetNodePropertyValue.

@Test
public void shouldSetNodePropertyValue() throws Exception {
    // GIVEN
    String value = "bozo";
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    long nodeId = statement.dataWriteOperations().nodeCreate();
    // WHEN
    int propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("clown");
    statement.dataWriteOperations().nodeSetProperty(nodeId, stringProperty(propertyKeyId, value));
    // THEN
    assertEquals(value, statement.readOperations().nodeGetProperty(nodeId, propertyKeyId));
    // WHEN
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // THEN
    assertEquals(value, readOperations.nodeGetProperty(nodeId, propertyKeyId));
}

Example 18 with ReadOperations

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

the class PropertyIT method shouldBeAbleToRemoveResetAndTwiceRemovePropertyOnNode.

@Test
public void shouldBeAbleToRemoveResetAndTwiceRemovePropertyOnNode() throws Exception {
    // given
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    int prop = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("foo");
    long node = statement.dataWriteOperations().nodeCreate();
    statement.dataWriteOperations().nodeSetProperty(node, property(prop, "bar"));
    commit();
    // when
    DataWriteOperations dataWriteOperations = dataWriteOperationsInNewTransaction();
    dataWriteOperations.nodeRemoveProperty(node, prop);
    dataWriteOperations.nodeSetProperty(node, property(prop, "bar"));
    dataWriteOperations.nodeRemoveProperty(node, prop);
    dataWriteOperations.nodeRemoveProperty(node, prop);
    commit();
    // then
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertThat(readOperations.nodeGetProperty(node, prop), nullValue());
}

Example 19 with ReadOperations

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

the class PropertyIT method shouldListAllPropertyKeys.

@Test
public void shouldListAllPropertyKeys() throws Exception {
    // given
    dbWithNoCache();
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    int prop1 = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("prop1");
    int prop2 = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("prop2");
    // when
    Iterator<Token> propIdsBeforeCommit = statement.readOperations().propertyKeyGetAllTokens();
    // then
    assertThat(asCollection(propIdsBeforeCommit), hasItems(new Token("prop1", prop1), new Token("prop2", prop2)));
    // when
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    Iterator<Token> propIdsAfterCommit = readOperations.propertyKeyGetAllTokens();
    // then
    assertThat(asCollection(propIdsAfterCommit), hasItems(new Token("prop1", prop1), new Token("prop2", prop2)));
}

Example 20 with ReadOperations

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

the class PropertyIT method shouldRemoveSetNodePropertyAcrossTransactions.

@Test
public void shouldRemoveSetNodePropertyAcrossTransactions() throws Exception {
    // GIVEN
    int propertyKeyId;
    long nodeId;
    {
        Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
        nodeId = statement.dataWriteOperations().nodeCreate();
        propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("clown");
        statement.dataWriteOperations().nodeSetProperty(nodeId, stringProperty(propertyKeyId, "bozo"));
        commit();
    }
    {
        Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
        // WHEN
        Object previous = statement.dataWriteOperations().nodeRemoveProperty(nodeId, propertyKeyId).value();
        // THEN
        assertEquals("bozo", previous);
        assertThat(statement.readOperations().nodeGetProperty(nodeId, propertyKeyId), nullValue());
        // WHEN
        commit();
    }
    // THEN
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertThat(readOperations.nodeGetProperty(nodeId, propertyKeyId), nullValue());
}