svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / featureset / FastFilteredIterator.java
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| 1 | 40559 | jjdelcerro | /**
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| 2 | * gvSIG. Desktop Geographic Information System.
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| 3 | *
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| 4 | * Copyright (C) 2007-2013 gvSIG Association.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version 3
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| 9 | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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| 19 | * MA 02110-1301, USA.
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| 20 | *
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| 21 | * For any additional information, do not hesitate to contact us
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| 22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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| 23 | */
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| 24 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.feature.impl.featureset; |
| 25 | |||
| 26 | import org.gvsig.fmap.dal.exception.DataException; |
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| 27 | import org.gvsig.fmap.dal.feature.impl.DefaultFeature; |
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| 28 | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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| 29 | import org.gvsig.tools.exception.BaseException; |
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| 30 | |||
| 31 | public class FastFilteredIterator extends FilteredIterator { |
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| 32 | |||
| 33 | DefaultFeature myFeature; |
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| 34 | |||
| 35 | 45989 | fdiaz | FastFilteredIterator(DefaultFeatureSet featureSet, long index, long elements) |
| 36 | 40435 | jjdelcerro | throws DataException {
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| 37 | super(featureSet);
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| 38 | initializeFeature(); |
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| 39 | 45989 | fdiaz | |
| 40 | if(featureSet.provider.canFilter() && featureSet.provider.canIterateFromIndex()){
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| 41 | this.iterator = featureSet.provider.iterator(index, elements);
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| 42 | } else {
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| 43 | this.iterator = featureSet.provider.iterator();
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| 44 | if (index > 0) { |
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| 45 | this.skypto(index);
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| 46 | } |
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| 47 | } |
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| 48 | 40435 | jjdelcerro | } |
| 49 | |||
| 50 | protected DefaultFeature createFeature(FeatureProvider fData)
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| 51 | throws DataException {
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| 52 | fData.setNew(false);
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| 53 | this.myFeature.setData(fData);
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| 54 | |||
| 55 | if (this.fset.transform.isEmpty()) { |
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| 56 | return myFeature;
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| 57 | } else {
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| 58 | return (DefaultFeature) this.fset.transform.applyTransform( |
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| 59 | myFeature, fset.getDefaultFeatureType()); |
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| 60 | } |
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| 61 | } |
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| 62 | |||
| 63 | protected void initializeFeature() { |
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| 64 | myFeature = new DefaultFeature(fset.store);
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| 65 | } |
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| 66 | |||
| 67 | public void remove() { |
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| 68 | super.remove();
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| 69 | this.initializeFeature();
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| 70 | } |
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| 71 | |||
| 72 | protected void doDispose() throws BaseException { |
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| 73 | super.doDispose();
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| 74 | myFeature = null;
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| 75 | } |
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| 76 | |||
| 77 | } |