本文整理了Java中org.neo4j.internal.kernel.api.Write.graphSetProperty()方法的一些代码示例，展示了Write.graphSetProperty()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Write.graphSetProperty()方法的具体详情如下：
包路径：org.neo4j.internal.kernel.api.Write
类名称：Write
方法名：graphSetProperty

Write.graphSetProperty介绍

[英]Set a property on the graph
[中]在图形上设置属性

代码示例

代码示例来源：origin: neo4j/neo4j

@Override
public void setProperty( String key, Object value )
{
  KernelTransaction transaction = safeAcquireTransaction();
  int propertyKeyId;
  try
  {
    propertyKeyId = transaction.tokenWrite().propertyKeyGetOrCreateForName( key );
  }
  catch ( IllegalTokenNameException e )
  {
    throw new IllegalArgumentException( format( "Invalid property key '%s'.", key ), e );
  }
  try ( Statement ignore = transaction.acquireStatement() )
  {
    transaction.dataWrite().graphSetProperty( propertyKeyId, Values.of( value, false ) );
  }
  catch ( InvalidTransactionTypeKernelException e )
  {
    throw new ConstraintViolationException( e.getMessage(), e );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
  public void shouldNotWriteWhenSettingPropertyToSameValue() throws Exception
  {
    // Given
    int prop;
    Value theValue = stringValue( "The Value" );

    try ( Transaction tx = beginTransaction() )
    {
      prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
      tx.dataWrite().graphSetProperty( prop, theValue );
      tx.success();
    }

    // When
    Transaction tx = beginTransaction();
    assertThat( tx.dataWrite().graphSetProperty( prop, theValue ), equalTo( theValue ) );
    tx.success();

    assertThat( tx.closeTransaction(), equalTo( Transaction.READ_ONLY ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToWriteNewGraphProperty() throws Exception
{
  int prop;
  try ( Transaction tx = beginTransaction() )
  {
    prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.success();
  }
  try ( org.neo4j.graphdb.Transaction ignore = graphDb.beginTx() )
  {
    assertThat( testSupport.graphProperties().getProperty( "prop" ), equalTo( "hello" ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToReplaceExistingGraphProperty() throws Exception
{
  int prop;
  try ( Transaction tx = beginTransaction() )
  {
    prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.success();
  }
  try ( Transaction tx = beginTransaction() )
  {
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "good bye" ) ), equalTo( stringValue("hello") ) );
    tx.success();
  }
  try ( org.neo4j.graphdb.Transaction ignore = graphDb.beginTx() )
  {
    assertThat( testSupport.graphProperties().getProperty( "prop" ), equalTo( "good bye" ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldSeeNewGraphPropertyInTransaction() throws Exception
{
  try ( Transaction tx = beginTransaction();
     PropertyCursor cursor = tx.cursors().allocatePropertyCursor() )
  {
    int prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.dataRead().graphProperties( cursor );
    assertTrue( cursor.next() );
    assertThat( cursor.propertyKey(), equalTo( prop ) );
    assertThat( cursor.propertyValue(), equalTo( stringValue( "hello" ) ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldSeeUpdatedGraphPropertyInTransaction() throws Exception
{
  int prop;
  try ( Transaction tx = beginTransaction() )
  {
    prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.success();
  }
  try ( Transaction tx = beginTransaction();
     PropertyCursor cursor = tx.cursors().allocatePropertyCursor() )
  {
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "good bye" ) ),
        equalTo( stringValue( "hello" ) ) );
    tx.dataRead().graphProperties( cursor );
    assertTrue( cursor.next() );
    assertThat( cursor.propertyKey(), equalTo( prop ) );
    assertThat( cursor.propertyValue(), equalTo( stringValue( "good bye" ) ) );
    assertFalse( cursor.next() );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToReadExistingGraphProperties() throws Exception
{
  int prop1, prop2, prop3;
  try ( Transaction tx = beginTransaction() )
  {
    prop1 = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop1" );
    prop2 = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop2" );
    prop3 = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop3" );
    tx.dataWrite().graphSetProperty( prop1, stringValue( "hello" ) );
    tx.dataWrite().graphSetProperty( prop2, stringValue( "world" ) );
    tx.dataWrite().graphSetProperty( prop3, stringValue( "etc" ) );
    tx.success();
  }
  try ( Transaction tx = beginTransaction();
     PropertyCursor cursor = tx.cursors().allocatePropertyCursor() )
  {
    tx.dataRead().graphProperties( cursor );
    assertTrue( cursor.next() );
    assertThat( cursor.propertyKey(), equalTo( prop1 ) );
    assertThat( cursor.propertyValue(), equalTo( stringValue( "hello" ) ) );
    assertTrue( cursor.next() );
    assertThat( cursor.propertyKey(), equalTo( prop2 ) );
    assertThat( cursor.propertyValue(), equalTo( stringValue( "world" ) ) );
    assertTrue( cursor.next() );
    assertThat( cursor.propertyKey(), equalTo( prop3 ) );
    assertThat( cursor.propertyValue(), equalTo( stringValue( "etc" ) ) );
    assertFalse( cursor.next() );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldBeAbleToRemoveExistingGraphProperty() throws Exception
{
  int prop;
  try ( Transaction tx = beginTransaction() )
  {
    prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.success();
  }
  try ( Transaction tx = beginTransaction() )
  {
    assertThat( tx.dataWrite().graphRemoveProperty( prop ), equalTo( stringValue("hello") ) );
    tx.success();
  }
  try ( org.neo4j.graphdb.Transaction ignore = graphDb.beginTx() )
  {
    assertFalse( testSupport.graphProperties().hasProperty( "prop" ) );
  }
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldNotSeeRemovedGraphPropertyInTransaction() throws Exception
{
  int prop;
  try ( Transaction tx = beginTransaction() )
  {
    prop = tx.tokenWrite().propertyKeyGetOrCreateForName( "prop" );
    assertThat( tx.dataWrite().graphSetProperty( prop, stringValue( "hello" ) ), equalTo( NO_VALUE ) );
    tx.success();
  }
  try ( Transaction tx = beginTransaction();
     PropertyCursor cursor = tx.cursors().allocatePropertyCursor() )
  {
    assertThat( tx.dataWrite().graphRemoveProperty( prop ), equalTo( stringValue( "hello" ) ) );
    tx.dataRead().graphProperties( cursor );
    assertFalse( cursor.next() );
  }
}

代码示例来源：origin: org.neo4j/neo4j-kernel

@Override
public void setProperty( String key, Object value )
{
  KernelTransaction transaction = safeAcquireTransaction();
  int propertyKeyId;
  try
  {
    propertyKeyId = transaction.tokenWrite().propertyKeyGetOrCreateForName( key );
  }
  catch ( IllegalTokenNameException e )
  {
    throw new IllegalArgumentException( format( "Invalid property key '%s'.", key ), e );
  }
  try ( Statement ignore = transaction.acquireStatement() )
  {
    transaction.dataWrite().graphSetProperty( propertyKeyId, Values.of( value, false ) );
  }
  catch ( InvalidTransactionTypeKernelException e )
  {
    throw new ConstraintViolationException( e.getMessage(), e );
  }
}