Revision 45308 trunk/org.gvsig.desktop/org.gvsig.desktop.compat.cdc/org.gvsig.fmap.dal/org.gvsig.fmap.dal.api/src/main/java/org/gvsig/fmap/dal/feature/FeatureQueryOrder.java
FeatureQueryOrder.java | ||
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*/ |
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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.Collections; |
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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 java.util.NoSuchElementException; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.Expression; |
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import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynStruct; |
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import org.gvsig.fmap.dal.feature.FeatureQueryOrder.FeatureQueryOrderMember; |
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import org.gvsig.tools.evaluator.Evaluator; |
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import org.gvsig.tools.evaluator.EvaluatorData; |
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import org.gvsig.tools.evaluator.EvaluatorException; |
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import org.gvsig.tools.lang.Cloneable; |
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import org.gvsig.tools.persistence.Persistent; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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import org.slf4j.LoggerFactory; |
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public class FeatureQueryOrder implements Persistent, Cloneable { |
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/** |
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* |
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* @author fdiaz |
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*/ |
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public interface FeatureQueryOrder extends Cloneable, Iterable<FeatureQueryOrderMember>, Persistent { |
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public static class FeatureQueryOrderMember implements Persistent, org.gvsig.tools.lang.Cloneable {
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public interface FeatureQueryOrderMember extends Persistent, Cloneable {
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String attributeName = null; |
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Evaluator evaluator = null; |
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Expression expression = null; |
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boolean ascending; |
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FeatureQueryOrderMember clone() throws CloneNotSupportedException; |
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private final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(FeatureQueryOrderMember.class);
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boolean getAscending();
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public FeatureQueryOrderMember() {
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String getAttributeName();
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} |
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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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Evaluator getEvaluator(); |
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FeatureQueryOrderMember(Evaluator evaluator, boolean ascending) { |
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this.evaluator = evaluator; |
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LOGGER.warn("Creating evaluator that will not be able to persist"); |
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this.ascending = ascending; |
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} |
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boolean hasEvaluator(); |
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@Override |
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public String toString() { |
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if (this.evaluator != null) { |
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return this.evaluator.getSQL() + " " + (this.ascending ? "ASC" : "DESC"); |
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} |
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return (this.ascending ? "+" : "-") + this.attributeName; |
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} |
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void setAscending(boolean ascending); |
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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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@Override |
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public void loadFromState(PersistentState state) |
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throws PersistenceException { |
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this.attributeName = state.getString("attributeName"); |
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this.ascending = state.getBoolean("ascending"); |
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// Note: evaluator dont persist |
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// this.evaluator = (Evaluator) state.get("evaluator"); |
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// this.expression = (Expression) state.get("expression"); |
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} |
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@Override |
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public void saveToState(PersistentState state) |
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throws PersistenceException { |
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state.set("attributeName", this.attributeName); |
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state.set("ascending", this.ascending); |
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// if (this.evaluator != null) { |
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// state.set("evaluator", evaluator); |
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// } |
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// state.set("expression", this.expression); |
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} |
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@Override |
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public FeatureQueryOrderMember clone() throws CloneNotSupportedException { |
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// Nothing more to clone |
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return (FeatureQueryOrderMember) super.clone(); |
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} |
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public void setAscending(boolean ascending) { |
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this.ascending = ascending; |
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} |
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} |
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private List<FeatureQueryOrderMember> members = new ArrayList(); |
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private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(FeatureQueryOrder.class); |
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Object add(String order); |
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public FeatureQueryOrder() { |
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} |
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Object add(String attributeName, boolean ascending); |
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public void copyFrom(FeatureQueryOrder other) { |
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List<FeatureQueryOrderMember> theMembers = new ArrayList<>(); |
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for (FeatureQueryOrderMember member : other.members) { |
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FeatureQueryOrderMember m; |
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try { |
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m = member.clone(); |
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} catch (CloneNotSupportedException ex) { |
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throw new RuntimeException("Can't copy member (" + member.toString() + ").", ex); |
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} |
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theMembers.add(m); |
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} |
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this.members = theMembers; |
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} |
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Object add(Expression expr, boolean ascending); |
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@Override |
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public String toString() { |
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StringBuilder builder = new StringBuilder(); |
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boolean needComma = false; |
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for (FeatureQueryOrderMember member : members) { |
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if (member != null && !StringUtils.isBlank(member.getAttributeName())) { |
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if (needComma) { |
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builder.append(","); |
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} |
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builder.append(member.toString()); |
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needComma = true; |
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} |
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} |
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String s = builder.toString(); |
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if (StringUtils.isBlank(s)) { |
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return null; |
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} |
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return s; |
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} |
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void clear(); |
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public Object add(String order) { |
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if (StringUtils.isEmpty(order)) { |
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return null; |
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} |
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Object r = null; |
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String[] attributes = StringUtils.split(order, ','); |
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for (String attribute : attributes) { |
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boolean ascending = true; |
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if (attribute.startsWith("+")) { |
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ascending = true; |
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attribute = attribute.substring(1); |
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} else if (attribute.startsWith("-")) { |
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ascending = false; |
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attribute = attribute.substring(1); |
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} |
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attribute = attribute.trim(); |
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r = this.add(attribute, ascending); |
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} |
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return r; |
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} |
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FeatureQueryOrder clone() throws CloneNotSupportedException; |
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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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boolean contains(String attributeName); |
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// TODO: Nota: hay que a?adir add de un Expression |
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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 Iterable<FeatureQueryOrderMember> members() { |
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// Me hubiese gustado que FeatureQueryOrder fuese Iterable, pero no se deja por |
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// que FeatureQueryOrderMember es una clase interna y no esta definida en el |
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// momento de poner el : |
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// implements Iterable<FeatureQueryOrderMember> |
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// Y si saco a una clase independiente FeatureQueryOrderMember se pierde |
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// compatibilidad binaria con quien la esta usando. |
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// Para rodearlo, he creado el metodo members. |
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return new Iterable<FeatureQueryOrderMember>() { |
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void copyFrom(FeatureQueryOrder other); |
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@Override |
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public Iterator<FeatureQueryOrderMember> iterator() { |
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return FeatureQueryOrder.this.iterator(); |
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} |
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}; |
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} |
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FeatureQueryOrderMember get(String attributeName); |
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public Iterator<FeatureQueryOrderMember> iterator() { |
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if (members == null) { |
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return new Iterator<FeatureQueryOrderMember>() { |
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@Override |
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public boolean hasNext() { |
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return false; |
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} |
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FeatureQueryOrder getCopy(); |
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@Override |
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public FeatureQueryOrderMember next() { |
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throw new NoSuchElementException(); |
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} |
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int getIndex(String attributeName); |
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@Override |
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public void remove() { |
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. |
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} |
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}; |
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} |
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return members.iterator(); |
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} |
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boolean isEmpty(); |
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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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Iterator<FeatureQueryOrderMember> iterator(); |
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public void remove(int index) { |
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members.remove(index); |
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} |
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Iterable<FeatureQueryOrderMember> members(); |
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public void clear() { |
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members.clear(); |
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} |
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void moveNext(String name); |
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public int size() { |
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return this.members.size(); |
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} |
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void movePrevious(String name); |
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public int getIndex(String attributeName) { |
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int n = 0; |
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for (FeatureQueryOrderMember member : members) { |
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if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
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return n; |
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} |
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n++; |
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} |
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return -1; |
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} |
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boolean remove(FeatureQueryOrderMember member); |
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public void movePrevious(String name) { |
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int n = this.getIndex(name); |
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if (n < 1) { |
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return; |
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} |
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Collections.swap(members, n, n - 1); |
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} |
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void remove(int index); |
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public void moveNext(String name) { |
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int n = this.getIndex(name); |
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if (n >= this.members.size() - 1) { |
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return; |
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} |
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Collections.swap(members, n, n + 1); |
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} |
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int size(); |
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public boolean isEmpty() { |
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return this.members == null || this.members.isEmpty(); |
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} |
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public FeatureQueryOrderMember get(String attributeName) { |
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for (FeatureQueryOrderMember member : members) { |
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if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
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return member; |
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} |
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} |
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return null; |
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} |
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|
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public boolean contains(String attributeName) { |
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for (FeatureQueryOrderMember member : members) { |
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if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
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return true; |
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} |
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} |
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return false; |
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} |
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|
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public Comparator<Feature> getFeatureComparator() { |
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return new DefaultFeatureComparator(this); |
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} |
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@Override |
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public FeatureQueryOrder clone() throws CloneNotSupportedException { |
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FeatureQueryOrder clone = (FeatureQueryOrder) super.clone(); |
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if (members != null) { |
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clone.members = new ArrayList(members.size()); |
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for (int i = 0; i < members.size(); i++) { |
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clone.members.add((members.get(i)).clone()); |
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} |
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} |
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return clone; |
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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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LOGGER.warn("Evaluator is not being added to the filter in a class copy"); |
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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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|
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/** |
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349 |
* Register the class on PersistenceManager |
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350 |
* |
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*/ |
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public static void registerPersistent() { |
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DynStruct definitionMember |
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= ToolsLocator.getPersistenceManager() |
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.addDefinition(FeatureQueryOrderMember.class, |
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"FeatureQueryOrderMember", |
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"FeatureQueryOrderMember Persistent definition", |
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null, |
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null); |
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|
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definitionMember.addDynFieldString("attributeName").setClassOfValue(String.class).setMandatory(false); |
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definitionMember.addDynFieldObject("expression").setClassOfValue(Expression.class).setMandatory(false); |
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definitionMember.addDynFieldBoolean("ascending").setMandatory(false); |
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|
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DynStruct definition |
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= ToolsLocator.getPersistenceManager() |
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.addDefinition(FeatureQueryOrder.class, |
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"FeatureQueryOrder", |
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"FeatureQueryOrder Persistent definition", |
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null, |
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null); |
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|
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definition.addDynFieldList("members").setClassOfItems(FeatureQueryOrderMember.class); |
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|
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} |
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|
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@Override |
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378 |
public void loadFromState(PersistentState state) |
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379 |
throws PersistenceException { |
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380 |
List<FeatureQueryOrderMember> stateMembers = (List) state.get("members"); |
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381 |
this.members = new ArrayList<>(); |
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382 |
for (FeatureQueryOrderMember stateMember : stateMembers) { |
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this.members.add(stateMember); |
|
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} |
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} |
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386 |
|
|
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@Override |
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388 |
public void saveToState(PersistentState state) throws PersistenceException { |
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state.set("members", members); |
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|
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} |
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392 |
|
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private class DefaultFeatureComparator implements Comparator<Feature> { |
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394 |
|
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private final FeatureQueryOrder order; |
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396 |
|
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397 |
public DefaultFeatureComparator(FeatureQueryOrder order) { |
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this.order = order; |
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399 |
// TODO optimizar en un array??? |
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400 |
|
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} |
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402 |
|
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403 |
private int myCompare(Object arg0, Object arg1) { |
|
404 |
if (arg0 == null) { |
|
405 |
if (arg1 == null) { |
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406 |
return 0; |
|
407 |
} else { |
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408 |
return 1; |
|
409 |
} |
|
410 |
} else if (arg1 == null) { |
|
411 |
if (arg0 == null) { |
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412 |
return 0; |
|
413 |
} else { |
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414 |
return 1; |
|
415 |
} |
|
416 |
} |
|
417 |
if (arg0 instanceof Comparable) { |
|
418 |
return ((Comparable) arg0).compareTo(arg1); |
|
419 |
} else if (arg1 instanceof Comparable) { |
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420 |
return ((Comparable) arg1).compareTo(arg0) * -1; |
|
421 |
} |
|
422 |
|
|
423 |
if (arg0.equals(arg1)) { |
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424 |
return 0; |
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425 |
} else { |
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426 |
return -1; |
|
427 |
} |
|
428 |
|
|
429 |
} |
|
430 |
|
|
431 |
@Override |
|
432 |
public int compare(Feature f0, Feature f1) { |
|
433 |
Iterator iter = this.order.iterator(); |
|
434 |
int returnValue = 0; |
|
435 |
// Feature f0 = (Feature) arg0; |
|
436 |
// Feature f1 = (Feature) arg1; |
|
437 |
Object item; |
|
438 |
String attrName; |
|
439 |
Evaluator evaluator; |
|
440 |
while (returnValue == 0 && iter.hasNext()) { |
|
441 |
item = iter.next(); |
|
442 |
if (item instanceof String) { |
|
443 |
attrName = (String) item; |
|
444 |
returnValue = this |
|
445 |
.myCompare(f0.get(attrName), f1 |
|
446 |
.get(attrName)); |
|
447 |
} else { |
|
448 |
evaluator = (Evaluator) item; |
|
449 |
try { |
|
450 |
returnValue = this.myCompare(evaluator |
|
451 |
.evaluate((EvaluatorData) f0), evaluator |
|
452 |
.evaluate((EvaluatorData) f1)); |
|
453 |
} catch (EvaluatorException e) { |
|
454 |
throw new DataEvaluatorRuntimeException(e); |
|
455 |
} |
|
456 |
} |
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457 |
} |
|
458 |
|
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459 |
return returnValue; |
|
460 |
} |
|
461 |
|
|
462 |
} |
|
463 |
|
|
464 | 90 |
} |
Also available in: Unified diff