graphdb/src/main/java/com/tinkerpop/blueprints/impls/orient/OrientElement.java
public final void validateProperty(final Element element, final String key, final Object value) throws IllegalArgumentException {
    if (settings.isStandardElementConstraints() && null == value)
      throw ExceptionFactory.propertyValueCanNotBeNull();
    if (null == key)
      throw ExceptionFactory.propertyKeyCanNotBeNull();
    if (settings.isStandardElementConstraints() && key.equals(StringFactory.ID))
      throw ExceptionFactory.propertyKeyIdIsReserved();
    if (element instanceof Edge && key.equals(StringFactory.LABEL))
      throw ExceptionFactory.propertyKeyLabelIsReservedForEdges();
    if (key.isEmpty())
      throw ExceptionFactory.propertyKeyCanNotBeEmpty();
  }
public final void validateProperty(final Element element, final String key, final Object value) throws IllegalArgumentException {
    if (settings.isStandardElementConstraints() && null == value)
      throw ExceptionFactory.propertyValueCanNotBeNull();
    if (null == key)
      throw ExceptionFactory.propertyKeyCanNotBeNull();
    if (settings.isStandardElementConstraints() && key.equals(StringFactory.ID))
      throw ExceptionFactory.propertyKeyIdIsReserved();
    if (element instanceof Edge && key.equals(StringFactory.LABEL))
      throw ExceptionFactory.propertyKeyLabelIsReservedForEdges();
    if (key.isEmpty())
      throw ExceptionFactory.propertyKeyCanNotBeEmpty();
  }
public final void validateProperty ( final Element element , final String key , final Object value ) throws IllegalArgumentException { if ( settings . isStandardElementConstraints ( ) && null == value ) throw ExceptionFactory . propertyValueCanNotBeNull ( ) ; if ( null == key ) throw ExceptionFactory . propertyKeyCanNotBeNull ( ) ; if ( settings . isStandardElementConstraints ( ) && key . equals ( StringFactory . ID ) ) throw ExceptionFactory . propertyKeyIdIsReserved ( ) ; if ( element instanceof Edge && key . equals ( StringFactory . LABEL ) ) throw ExceptionFactory . propertyKeyLabelIsReservedForEdges ( ) ; if ( key . isEmpty ( ) ) throw ExceptionFactory . propertyKeyCanNotBeEmpty ( ) ; }
(Blueprints Extension) Validates an Element property.

@param element Element instance
@param key     Property name
@param value   property value
@throws IllegalArgumentException
( Blueprints Extension ) Validates an Element property .