svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / FeatureQueryOrder.java @ 26321
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package org.gvsig.fmap.dal.feature; |
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import java.util.ArrayList; |
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import java.util.Comparator; |
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import java.util.Iterator; |
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import java.util.List; |
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import org.gvsig.fmap.dal.feature.impl.DefaultFeatureComparator; |
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import org.gvsig.tools.evaluator.Evaluator; |
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public class FeatureQueryOrder { |
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private List members = new ArrayList(); |
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public class FeatureQueryOrderMember { |
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String attributeName = null; |
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Evaluator evaluator = null;
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boolean ascending;
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FeatureQueryOrderMember(String attributeName, boolean ascending) { |
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this.attributeName = attributeName;
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this.ascending = ascending;
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} |
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FeatureQueryOrderMember(Evaluator evaluator, boolean ascending) {
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this.evaluator = evaluator;
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this.ascending = ascending;
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} |
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public boolean hasEvaluator() { |
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return this.evaluator != null; |
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} |
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public Evaluator getEvaluator() {
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return this.evaluator; |
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} |
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public boolean getAscending() { |
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return this.ascending; |
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} |
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public String getAttributeName() { |
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return this.attributeName; |
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} |
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} |
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public Object add(String attributeName, boolean ascending) { |
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FeatureQueryOrderMember member = new FeatureQueryOrderMember(
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attributeName, ascending); |
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if( members.add(member) ) {
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return member;
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} |
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return null; |
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} |
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public Object add(Evaluator evaluator, boolean ascending) { |
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FeatureQueryOrderMember member = new FeatureQueryOrderMember(
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evaluator, |
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ascending); |
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if (members.add(member)) {
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return member;
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} |
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return null; |
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} |
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public Iterator iterator() { |
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return members.iterator();
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} |
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public boolean remove(FeatureQueryOrderMember member) { |
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return members.remove(member);
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} |
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public void remove(int index) { |
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members.remove(index); |
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} |
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public void clear() { |
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members.clear(); |
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} |
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public int size() { |
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return this.members.size(); |
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} |
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public Comparator getFeatureComparator() { |
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return new DefaultFeatureComparator(this); |
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} |
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public FeatureQueryOrder getCopy() {
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FeatureQueryOrder aCopy = new FeatureQueryOrder();
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Iterator iter = this.members.iterator(); |
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FeatureQueryOrderMember member; |
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while (iter.hasNext()) {
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member = (FeatureQueryOrderMember) iter.next(); |
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if (member.hasEvaluator()) {
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aCopy.add(member.getEvaluator(), member.getAscending()); |
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} else {
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aCopy.add(member.getAttributeName(), member.getAscending()); |
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} |
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} |
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return aCopy;
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} |
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} |