/**
* ExpressionOperator for the MDSYS.SDO_WITHIN_DISTANCE Spatial Operator on the Oracle Database
* Use of this operator requires the Java spatial classes
*
* @return
*/
public static ExpressionOperator withinDistance() {
ExpressionOperator operator =
ExpressionOperator.simpleThreeArgumentFunction(
SDO_WITHIN_DISTANCE, "MDSYS.SDO_WITHIN_DISTANCE");
operator.bePrefix();
return operator;
}
/** Create the log operator for this platform */
private static final ExpressionOperator createLogOperator() {
ExpressionOperator result = new ExpressionOperator();
result.setSelector(ExpressionOperator.Log);
Vector v = NonSynchronizedVector.newInstance(2);
v.addElement("LOG(10,");
v.addElement(")");
result.printsAs(v);
result.bePrefix();
result.setNodeClass(FunctionExpression.class);
return result;
}
private static final ExpressionOperator createNullifOperator() {
ExpressionOperator exOperator = new ExpressionOperator();
exOperator.setType(ExpressionOperator.FunctionOperator);
exOperator.setSelector(ExpressionOperator.NullIf);
Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(4);
v.addElement(" (CASE WHEN ");
v.addElement(" = ");
v.addElement(" THEN NULL ELSE ");
v.addElement(" END) ");
exOperator.printsAs(v);
exOperator.bePrefix();
int[] indices = {0, 1, 0};
exOperator.setArgumentIndices(indices);
exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
return exOperator;
}
/**
* ExpressionOperator for the MDSYS.SDO_NN Spatial Operator on the Oracle Database Use of this
* operator requires the Java spatial classes
*
* @return
*/
public static ExpressionOperator nearestNeighbor() {
ExpressionOperator operator =
ExpressionOperator.simpleThreeArgumentFunction(SDO_NN, "MDSYS.SDO_NN");
operator.bePrefix();
return operator;
}
/**
* ExpressionOperator for the MDSYS.SDO_FILTER Spatial Operator on the Oracle Database Use of this
* operator requires the Java spatial classes
*
* @return
*/
public static ExpressionOperator filter() {
ExpressionOperator operator =
ExpressionOperator.simpleThreeArgumentFunction(SDO_FILTER, "MDSYS.SDO_FILTER");
operator.bePrefix();
return operator;
}
/**
* ExpressionOperator for the MDSYS.MDSYS.SDO_RELATE Spatial Operator on the Oracle Database Use
* of this operator requires the Java spatial classes
*
* @return
*/
public static ExpressionOperator relate() {
ExpressionOperator operator =
ExpressionOperator.simpleThreeArgumentFunction(SDO_RELATE, "MDSYS.SDO_RELATE");
operator.bePrefix();
return operator;
}
