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MajoritySelector.javaAPI DocApache Ant 1.703455Wed Dec 13 06:16:18 GMT 2006org.apache.tools.ant.types.selectors

MajoritySelector

public class MajoritySelector extends BaseSelectorContainer
This selector is here just to shake up your thinking a bit. Don't get too caught up in boolean, there are other ways you can evaluate a collection of selectors. This one takes a vote of the selectors it contains, and majority wins. You could also have an "all-but-one" selector, a "weighted-average" selector, and so on. These are left as exercises for the reader (as are the usecases where this would be necessary).
since
1.5

Fields Summary
private boolean
allowtie
Constructors Summary
public MajoritySelector()
Default constructor.
Methods Summary
public booleanisSelected(java.io.File basedir, java.lang.String filename, java.io.File file)
Returns true (the file is selected) if most of the other selectors agree. In case of a tie, go by the allowtie setting. That defaults to true, meaning in case of a tie, the file is selected.

param
basedir the base directory the scan is being done from
param
filename is the name of the file to check
param
file is a java.io.File object for the filename that the selector can use
return
whether the file should be selected or not

        validate();
        int yesvotes = 0;
        int novotes = 0;
        Enumeration e = selectorElements();
        boolean result;

        while (e.hasMoreElements()) {
            result = ((FileSelector) e.nextElement()).isSelected(basedir,
                    filename, file);
            if (result) {
                yesvotes = yesvotes + 1;
            } else {
                novotes = novotes + 1;
            }
        }
        if (yesvotes > novotes) {
            return true;
        } else if (novotes > yesvotes) {
            return false;
        }
        // At this point, we know we have a tie.
        return allowtie;
public voidsetAllowtie(boolean tiebreaker)
A attribute to specify what will happen if number of yes votes is the same as the number of no votes defaults to true

param
tiebreaker the value to give if there is a tie

        allowtie = tiebreaker;
public java.lang.StringtoString()

return
a string describing this object

        StringBuffer buf = new StringBuffer();
        if (hasSelectors()) {
            buf.append("{majorityselect: ");
            buf.append(super.toString());
            buf.append("}");
        }
        return buf.toString();