Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation; either version 3 of the License, or (at your option) any later

 * version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.feature.impl;

import java.text.MessageFormat;

import java.util.Iterator;

import java.util.zip.CRC32;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.DataListException;

import org.gvsig.fmap.dal.feature.EditableFeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.EditableFeatureType;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureAttributeEmulator;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.exception.FeatureTypeIntegrityException;

import org.gvsig.fmap.dal.feature.exception.UnsupportedDataTypeException;

import org.gvsig.tools.evaluator.Evaluator;

public class DefaultEditableFeatureType extends DefaultFeatureType implements

        EditableFeatureType {

    /**

     *

     */

    private static final long serialVersionUID = -713976880396024389L;

    private boolean hasStrongChanges;

    private DefaultFeatureType source;

    public DefaultEditableFeatureType() {

        super();

        this.hasStrongChanges = false;

        this.source = null;

    }

    public DefaultEditableFeatureType(String id) {

        super(id);

        this.hasStrongChanges = false;

        this.source = null;

    }

    protected DefaultEditableFeatureType(DefaultEditableFeatureType other) {

        super(other);

        this.source = (DefaultFeatureType) other.getSource();

    }

    protected DefaultEditableFeatureType(DefaultFeatureType other) {

        super(other);

        this.source = other;

    }

    protected void intitalizeAddAttibute(DefaultFeatureAttributeDescriptor attr) {

        super.add(new DefaultEditableFeatureAttributeDescriptor(attr));

    }

    public boolean hasStrongChanges() {

        if (hasStrongChanges) {

            return true;

        }

        Iterator iter = this.iterator();

        DefaultEditableFeatureAttributeDescriptor attr;

        while (iter.hasNext()) {

            attr = (DefaultEditableFeatureAttributeDescriptor) iter.next();

            if (attr.hasStrongChanges()) {

                return true;

            }

        }

        return false;

    }

    public FeatureType getCopy() {

        return new DefaultEditableFeatureType(this);

    }

    public EditableFeatureType getEditable() {

        throw new UnsupportedOperationException();

    }

    public boolean addAll(DefaultFeatureType other) {

        Iterator iter = other.iterator();

        DefaultFeatureAttributeDescriptor attr;

        DefaultEditableFeatureAttributeDescriptor editableAttr;

        while (iter.hasNext()) {

            attr = (DefaultFeatureAttributeDescriptor) iter.next();

            if (attr instanceof DefaultEditableFeatureAttributeDescriptor) {

                editableAttr = new DefaultEditableFeatureAttributeDescriptor(

                        attr);

            } else {

                editableAttr = new DefaultEditableFeatureAttributeDescriptor(

                        attr);

            }

            super.add(editableAttr);

        }

        this.pk = null;

        this.fixAll();

        return true;

    }

    public EditableFeatureAttributeDescriptor addLike(

            FeatureAttributeDescriptor other) {

        DefaultEditableFeatureAttributeDescriptor editableAttr;

        if (other instanceof DefaultEditableFeatureAttributeDescriptor) {

            editableAttr = new DefaultEditableFeatureAttributeDescriptor(

                    (DefaultFeatureAttributeDescriptor) other);

        } else {

            editableAttr = new DefaultEditableFeatureAttributeDescriptor(

                    (DefaultFeatureAttributeDescriptor) other);

        }

        super.add(editableAttr);

        this.fixAll();

        return editableAttr;

    }

    public FeatureType getSource() {

        return source;

    }

    private long getCRC() {

        StringBuffer buffer = new StringBuffer();

        for (int i = 0; i < this.size(); i++) {

            FeatureAttributeDescriptor x = this.getAttributeDescriptor(i);

            buffer.append(x.getName());

            buffer.append(x.getDataTypeName());

            buffer.append(x.getSize());

        }

        CRC32 crc = new CRC32();

        byte[] data = buffer.toString().getBytes();

        crc.update(data);

        return crc.getValue();

    }

    public FeatureType getNotEditableCopy() {

        this.fixAll();

        DefaultFeatureType copy = new DefaultFeatureType(this, false);

        Iterator iter = this.iterator();

        DefaultFeatureAttributeDescriptor attr;

        while (iter.hasNext()) {

            attr = (DefaultFeatureAttributeDescriptor) iter.next();

            copy.add(new DefaultFeatureAttributeDescriptor(attr));

        }

        return copy;

    }

    public EditableFeatureAttributeDescriptor add(String name, int type) {

        return this.add(name, type, true);

    }

    private EditableFeatureAttributeDescriptor add(String name, int type, boolean updateHasStrongChanges) {

        DefaultEditableFeatureAttributeDescriptor attr = new DefaultEditableFeatureAttributeDescriptor();

        Iterator iter = this.iterator();

        while (iter.hasNext()) {

            EditableFeatureAttributeDescriptor descriptor = (EditableFeatureAttributeDescriptor) iter.next();

            if (descriptor.getName().equalsIgnoreCase(name)) {

                throw new RuntimeException(

                        MessageFormat.format("Name descriptor {0} duplicated.", new String[]{name})

                );

            }

        }

        attr.setName(name);

        switch (type) {

            case DataTypes.BOOLEAN:

            case DataTypes.BYTE:

            case DataTypes.BYTEARRAY:

            case DataTypes.CHAR:

            case DataTypes.DATE:

            case DataTypes.DOUBLE:

            case DataTypes.FLOAT:

            case DataTypes.GEOMETRY:

            case DataTypes.INT:

            case DataTypes.LONG:

            case DataTypes.OBJECT:

            case DataTypes.STRING:

            case DataTypes.TIME:

            case DataTypes.TIMESTAMP:

                break;

            default:

                throw new UnsupportedDataTypeException(name, type);

        }

        attr.setDataType(type);

        attr.setIndex(this.size());

        super.add(attr);

        if (!hasStrongChanges && updateHasStrongChanges) {

            hasStrongChanges = true;

        }

        this.pk = null;

        return attr;

    }

    public EditableFeatureAttributeDescriptor add(String name, int type,

            int size) {

        return this.add(name, type, true).setSize(size);

    }

    public EditableFeatureAttributeDescriptor add(String name, int type,

            Evaluator evaluator) {

        if (evaluator == null) {

            throw new IllegalArgumentException();

        }

        return this.add(name, type, false).setEvaluator(evaluator);

    }

    public EditableFeatureAttributeDescriptor add(String name, int type,

            FeatureAttributeEmulator emulator) {

        if (emulator == null) {

            throw new IllegalArgumentException();

        }

        return this.add(name, type, false).setFeatureAttributeEmulator(emulator);

    }

    public Object remove(String name) {

        DefaultFeatureAttributeDescriptor attr = (DefaultFeatureAttributeDescriptor) this

                .get(name);

        if (attr == null) {

            return null;

        }

        if (attr.getEvaluator() == null) {

            hasStrongChanges = true;

        }

        super.remove(attr);

        this.pk = null;

        this.fixAll();

        return attr;

    }

    protected void fixAll() {

        int i = 0;

        Iterator iter = super.iterator();

        DefaultFeatureAttributeDescriptor attr;

        while (iter.hasNext()) {

            attr = (DefaultFeatureAttributeDescriptor) iter

                    .next();

            attr.setIndex(i++);

            if (attr instanceof DefaultEditableFeatureAttributeDescriptor) {

                ((DefaultEditableFeatureAttributeDescriptor) attr).fixAll();

            }

            if (attr.getEvaluator() != null) {

                this.hasEvaluators = true;

            }

            if (attr.getFeatureAttributeEmulator() != null) {

                this.hasEmulators = true;

            }

            if (this.defaultGeometryAttributeName == null && attr.getType() == DataTypes.GEOMETRY) {

                this.defaultGeometryAttributeName = attr.getName();

            }

        }

        if (this.defaultGeometryAttributeName != null) {

            this.defaultGeometryAttributeIndex = this.getIndex(this.defaultGeometryAttributeName);

        }

        this.internalID = Long.toHexString(this.getCRC());

    }

    public void checkIntegrity() throws DataListException {

        Iterator iter = super.iterator();

        FeatureTypeIntegrityException ex = null;

        while (iter.hasNext()) {

            DefaultEditableFeatureAttributeDescriptor attr = (DefaultEditableFeatureAttributeDescriptor) iter

                    .next();

            try {

                attr.checkIntegrity();

            } catch (Exception e) {

                if (ex == null) {

                    ex = new FeatureTypeIntegrityException(this.getId());

                }

                ex.add(e);

            }

        }

        if (ex != null) {

            throw ex;

        }

    }

    public boolean remove(EditableFeatureAttributeDescriptor attribute) {

        if (attribute.getEvaluator() != null) {

            hasStrongChanges = true;

        }

        if (!super.remove(attribute)) {

            return false;

        }

        this.fixAll();

        return true;

    }

    public void setDefaultGeometryAttributeName(String name) {

        if (name == null || name.length() == 0) {

            this.defaultGeometryAttributeName = null;

            this.defaultGeometryAttributeIndex = -1;

            return;

        }

        DefaultFeatureAttributeDescriptor attr = (DefaultFeatureAttributeDescriptor) this

                .get(name);

        if (attr == null) {

            throw new IllegalArgumentException("Attribute '" + name

                    + "' not found.");

        }

        if (attr.getType() != DataTypes.GEOMETRY) {

            throw new IllegalArgumentException("Attribute '" + name

                    + "' is not a geometry.");

        }

        this.defaultGeometryAttributeName = name;

        this.defaultGeometryAttributeIndex = attr.getIndex();

    }

    public void setHasOID(boolean hasOID) {

        this.hasOID = hasOID;

    }

    protected Iterator getIterator(Iterator iter) {

        return new EditableDelegatedIterator(iter, this);

    }

    public EditableFeatureAttributeDescriptor getEditableAttributeDescriptor(String name) {

        return (EditableFeatureAttributeDescriptor) this.getAttributeDescriptor(name);

    }

    public EditableFeatureAttributeDescriptor getEditableAttributeDescriptor(int index) {

        return (EditableFeatureAttributeDescriptor) this.getAttributeDescriptor(index);

    }

    protected class EditableDelegatedIterator extends DelegatedIterator {

        private DefaultEditableFeatureType fType;

        public EditableDelegatedIterator(Iterator iter,

                DefaultEditableFeatureType fType) {

            super(iter);

            this.fType = fType;

        }

        public void remove() {

            this.iterator.remove();

            this.fType.fixAll();

        }

    }

    protected void setAllowAutomaticValues(boolean value) {

        this.allowAtomaticValues = value;

    }

    public void setDefaultTimeAttributeName(String name) {

        if (name == null || name.length() == 0) {

            this.defaultTimeAttributeIndex = -1;

            return;

        }

        DefaultFeatureAttributeDescriptor attr = (DefaultFeatureAttributeDescriptor) this

                .get(name);

        if (attr == null) {

            throw new IllegalArgumentException("Attribute '" + name

                    + "' not found.");

        }

        this.defaultTimeAttributeIndex = attr.getIndex();

    }

}