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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.select.simple;
import com.yahoo.document.select.rule.ComparisonNode;
import com.yahoo.document.select.rule.ExpressionNode;
/**
* @author baldersheim
*/
public class SelectionParser extends Parser {
private ExpressionNode node;
public ExpressionNode getNode() { return node; }
public boolean parse(CharSequence s) {
boolean retval = false;
IdSpecParser id = new IdSpecParser();
if (id.parse(s)) {
OperatorParser op = new OperatorParser();
if (op.parse(id.getRemaining())) {
if (id.isUserSpec()) {
IntegerParser v = new IntegerParser();
if (v.parse(op.getRemaining())) {
node = new ComparisonNode(id.getId(), op.getOperator(), v.getValue());
retval = true;
}
setRemaining(v.getRemaining());
} else {
StringParser v = new StringParser();
if (v.parse(op.getRemaining())) {
node = new ComparisonNode(id.getId(), op.getOperator(), v.getValue());
retval = true;
}
setRemaining(v.getRemaining());
}
} else {
setRemaining(op.getRemaining());
}
} else {
setRemaining(id.getRemaining());
}
return retval;
}
}
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