root / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / impl / featureSet / DefaultIterator.java @ 24496
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package org.gvsig.fmap.dal.feature.impl.featureSet; |
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import java.util.Iterator; |
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import org.gvsig.fmap.dal.exceptions.DataException; |
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import org.gvsig.fmap.dal.feature.impl.DefaultFeature; |
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import org.gvsig.fmap.dal.feature.spi.FeatureData; |
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class DefaultIterator implements Iterator { |
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protected Iterator iterator; |
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protected DefaultFeatureSet fset;
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public DefaultIterator(DefaultFeatureSet featureSet) {
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this.fset = featureSet;
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} |
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public DefaultIterator(DefaultFeatureSet featureSet, long index) |
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throws DataException {
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this.fset = featureSet;
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if (index > 0) { |
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if (featureSet.provider.canIterateFromIndex()) {
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try {
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this.iterator = featureSet.provider.iterator(index);
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} catch (UnsupportedOperationException e) { |
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this.iterator = featureSet.provider.iterator();
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skypto(index); |
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} |
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} else {
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this.iterator = featureSet.provider.iterator();
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skypto(index); |
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} |
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} else {
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this.iterator = featureSet.provider.iterator();
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} |
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} |
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protected void skypto(long index) { |
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// TODO: Comprobar si esta bien la condicion de n<=
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for (long n = 0; n <= index && this.getIterator().hasNext(); n++, this |
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.getIterator() |
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.next()) {
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; |
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} |
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} |
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public boolean hasNext() { |
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fset.checkModified(); |
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return this.getIterator().hasNext(); |
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} |
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public Object next() { |
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fset.checkModified(); |
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return this.createFeature((FeatureData) this.getIterator().next()); |
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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protected DefaultFeature createFeature(FeatureData fData) {
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return new DefaultFeature(fset.store, fData); |
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} |
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protected Iterator getIterator() { |
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return this.iterator; |
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} |
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protected boolean isDeleted(FeatureData data) { |
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return false; |
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} |
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protected void doNext() throws DataException { |
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} |
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} |