Application: gvSIG desktop » Library: org.gvsig.tools

package org.gvsig.tools.dynobject.impl;

import java.io.UnsupportedEncodingException;

import java.net.URLDecoder;

import java.net.URLEncoder;

import java.util.List;

import java.util.Map;

import java.util.Set;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dataTypes.DataTypes;

import org.gvsig.tools.dynobject.DynClass;

import org.gvsig.tools.dynobject.DynField;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.dynobject.DynObjectEncoder;

public class SimpleDynObjectEncoder implements DynObjectEncoder {

    @Override

    public String encode(DynObject value) {

        return this.encode(value, "UTF-8");

    }

    @Override

    public String encode(DynObject value, String charset) {

        DynClass definition = value.getDynClass();

        StringBuilder builder = new StringBuilder();

        builder.append(this.encodePair("_entity_", definition.getFullName(), charset));

        for (DynField field : definition.getDynFields()) {

            String name = field.getName();

            Object v0 = value.getDynValue(name);

            builder.append(",");

            builder.append(this.encodePair(name, v0, charset));

        }

        return builder.toString();    

    }

    @Override

    public DynObject decode(String value) {

        String[] entries = value.split(",");

        if( entries==null || entries.length<1 ) {

            return null;

        }

        // first entry is _entity_

        String[] entryEntity = entries[0].split(":");

        String entityName = this.decodeValue(entryEntity[1].trim());

        DynObject output = ToolsLocator.getDynObjectManager().createDynObject(entityName);

        return this.decode(value, output, entries, "UTF-8");

    }

    @Override

    public DynObject decode(String value, DynObject output) {

        return this.decode(value, output, "UTF-8");

    }

    @Override

    public DynObject decode(String value, DynObject output, String charset) {

        String[] entries = value.split(",");

        if( entries==null || entries.length<1 ) {

            return null;

        }

        return this.decode(value, output, entries, "UTF-8");

    }

    protected DynObject decode(String value, DynObject output, String[] entries, String charset) {

        DynClass definition = output.getDynClass();

        for (String entry : entries) {

            String[] entryPair = entry.split(":");

            DynField field = definition.getDynField(entryPair[0]);

            if( field!=null ) {

                String name = entryPair[0];

                String v0;

                if( entryPair.length==2 ) {

                    v0 = entryPair[1];

                } else {

                    v0 = null;

                }

                switch(field.getType()) {

                    case DataTypes.DYNOBJECT:

                        DynObject v1 = this.decode( this.decodeValue(v0, charset));

                        output.setDynValue(name, v0);

                        break;

                    case DataTypes.ARRAY:

                        // TODO: encode array not implemented

                        break;

                    case DataTypes.LIST:

                        // TODO: encode array not implemented

                        break;

                    case DataTypes.SET:

                        // TODO: encode array not implemented

                        break;

                    case DataTypes.MAP:

                        // TODO: encode array not implemented

                        break;

                    case DataTypes.OBJECT:

                        // TODO: encode array not implemented

                        break;

                    default:

                        output.setDynValue(name, this.decodeValue(v0, charset) );

                        break;

                }

            }

        }

        return output;

    }

    @Override

    public String encodePair(String name, Object value) {

        return this.encodePair(name, value, "UTF-8");

    }

    @Override

    public String encodePair(String name, Object value, String charset) {

        if( value == null ) {

            return name + ":";

        } else if( value instanceof DynObject ) {

            return name + ":" + this.encodeValue(this.encode((DynObject) value, charset));

        } else if( value instanceof List ) {

            // TODO: encode of List not implemented

            return name + ":";

        } else if( value instanceof Map ) {

            // TODO: encode of Map not implemented

            return name + ":";

        } else if( value instanceof Set ) {

            // TODO: encode of Set not implemented

            return name + ":";

        } else if( value.getClass().isArray() ) {

            // TODO: encode of array not implemented

            return name + ":";

        } else {

            return name + ":" + this.encodeValue(value.toString(), charset);

        }        

    }

    @Override

    public String encodeValue(String value) {

        return this.encodeValue(value, "UTF-8");

    }

    @Override

    public String encodeValue(String value, String charset) {

        try {

            return URLEncoder.encode(value, charset);

        } catch (UnsupportedEncodingException ex) {

            // Do nothing

        }

        return value.replace(",", "%2C");

    }

    @Override

    public String decodeValue(String value) {

        return this.decodeValue(value,"UTF-8");

    }

    @Override

    public String decodeValue(String value, String charset) {

        try {

            return URLDecoder.decode(value,charset);

        } catch (UnsupportedEncodingException ex) {

            // Do nothing

        }

        return value.replace("%2C",",");

    }

}