/* $Revision$ $Author$ $Date$
*
* Copyright (C) 2004-2007 The Chemistry Development Kit (CDK) project
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
* (or see http://www.gnu.org/copyleft/lesser.html)
*/
package org.openscience.cdk.isomorphism.matchers.smarts;
import org.openscience.cdk.interfaces.IAtom;
import org.openscience.cdk.isomorphism.matchers.IQueryAtom;
/**
* This class matches a logical operator that connects two query atoms
*
* @cdk.module smarts
* @cdk.githash
* @cdk.keyword SMARTS
*/
public class LogicalOperatorAtom extends SMARTSAtom {
private static final long serialVersionUID = -5752396252307536738L;
/**
* Left child
*/
private IQueryAtom left;
/**
* Name of operator
*/
private String operator;
/**
* Right child
*/
private IQueryAtom right;
public IQueryAtom getLeft() {
return left;
}
public String getOperator() {
return operator;
}
public IQueryAtom getRight() {
return right;
}
public void setLeft(IQueryAtom left) {
this.left = left;
}
public void setOperator(String name) {
this.operator = name;
}
public void setRight(IQueryAtom right) {
this.right = right;
}
/* (non-Javadoc)
* @see org.openscience.cdk.isomorphism.matchers.smarts.SMARTSAtom#matches(org.openscience.cdk.interfaces.IAtom)
*/
public boolean matches(IAtom atom) {
boolean val = false;
boolean matchesLeft = left.matches(atom);
if (right != null) {
if ("and".equals(operator) && matchesLeft) {
boolean matchesRight = right.matches(atom);
val = matchesLeft && matchesRight;
} else if ("or".equals(operator)) {
boolean matchesRight = right.matches(atom);
val = matchesLeft || matchesRight;
}
} else {
if ("not".equals(operator)) {
val = (!matchesLeft);
} else {
val = matchesLeft;
}
}
return val;
}
/* (non-Javadoc)
* @see org.openscience.cdk.ChemObject#getFlag(int)
*/
public boolean getFlag(int flagType) {
boolean val = false;
boolean leftFlag = left.getFlag(flagType);
if (right != null) {
if ("and".equals(operator) && leftFlag) {
boolean rightFlag = right.getFlag(flagType);
val = leftFlag && rightFlag;
} else if ("or".equals(operator)) {
boolean rightFlag = right.getFlag(flagType);
val = leftFlag || rightFlag;
}
} else {
if ("not".equals(operator)) {
val = (!leftFlag);
} else {
val = leftFlag;
}
}
return val;
}
}