gvsig-raster / org.gvsig.raster / branches / org.gvsig.raster.2.4 / org.gvsig.raster / org.gvsig.raster.gdal / org.gvsig.raster.gdal.provider / src / main / java / org / gvsig / raster / gdal / provider / RasterGdalFileSystemServerProviderFactory.java @ 8697
History | View | Annotate | Download (5.6 KB)
1 |
package org.gvsig.raster.gdal.provider; |
---|---|
2 |
|
3 |
import java.io.File; |
4 |
import java.util.Arrays; |
5 |
import java.util.HashSet; |
6 |
import java.util.Set; |
7 |
|
8 |
import org.apache.commons.io.FilenameUtils; |
9 |
import org.gdal.gdal.Driver; |
10 |
import org.gdal.gdal.gdal; |
11 |
import org.gdal.gdalconst.gdalconstConstants; |
12 |
import org.gvsig.fmap.dal.DataServerExplorer; |
13 |
import org.gvsig.fmap.dal.exception.InitializeException; |
14 |
import org.gvsig.fmap.dal.serverexplorer.filesystem.spi.FilesystemServerExplorerProvider; |
15 |
import org.gvsig.fmap.dal.serverexplorer.filesystem.spi.FilesystemServerExplorerProviderFactory; |
16 |
|
17 |
/**
|
18 |
* Factory for GDAL filesystem providers
|
19 |
* @author dmartinezizquierdo
|
20 |
*
|
21 |
*/
|
22 |
public class RasterGdalFileSystemServerProviderFactory |
23 |
implements FilesystemServerExplorerProviderFactory {
|
24 |
|
25 |
private RasterGdalStoreProviderFactory providerFactory;
|
26 |
private String newParams; |
27 |
private Set<String> validExtensions; |
28 |
|
29 |
/**
|
30 |
* Constructor
|
31 |
* @param providerFactory
|
32 |
* @param newParams Definition name of the params used to create a new store
|
33 |
*/
|
34 |
public RasterGdalFileSystemServerProviderFactory(RasterGdalStoreProviderFactory providerFactory, String newParams){ |
35 |
this.providerFactory=providerFactory;
|
36 |
this.newParams=newParams;
|
37 |
init(); |
38 |
} |
39 |
|
40 |
private void init(){ |
41 |
this.validExtensions=new HashSet<String>(); |
42 |
String driverExtension=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DMD_EXTENSION); |
43 |
//At least the driver given extension is always accepted (more can be defined in its parameters)
|
44 |
// GDAL_DMD_EXTENSION only returns an extension. GDAL_DMD_EXTENSIONS should be used instead in GDAL 2.0.
|
45 |
// GDAL_DMD_EXTENSIONS returns a list of accepted extensions separated by a blank
|
46 |
// Meanwhile, most common extensions are added defined in the xml parameters
|
47 |
if (driverExtension!=null){ |
48 |
validExtensions.add(driverExtension); |
49 |
} |
50 |
} |
51 |
|
52 |
/**
|
53 |
* Adds valid extensions to be accepted by the driver ({"jpg","jpeg","jp2",...})
|
54 |
* @param extensions
|
55 |
*/
|
56 |
public void addAcceptedExtensions(String[] extensions){ |
57 |
if (extensions!=null){ |
58 |
for (String extension:extensions){ |
59 |
validExtensions.add(extension.trim()); |
60 |
} |
61 |
} |
62 |
} |
63 |
|
64 |
@Override
|
65 |
public FilesystemServerExplorerProvider createProvider() throws InitializeException { |
66 |
return new RasterGdalFileSystemServerProvider(this); |
67 |
} |
68 |
|
69 |
@Override
|
70 |
public boolean accept(File file) { |
71 |
//If the driver is in the list to be avoided, it will not be opened
|
72 |
String drvName=providerFactory.getDriver().getShortName();
|
73 |
if ( Arrays.asList(RasterGdalLibrary.EXCLUDED_OPEN_DRIVERS).contains(drvName) ){ |
74 |
return false; |
75 |
} |
76 |
|
77 |
if (isAcceptedExtension(file)){
|
78 |
if (!file.exists()) {
|
79 |
return true; |
80 |
} |
81 |
return isAcceptedByDriver(file);
|
82 |
|
83 |
|
84 |
} |
85 |
|
86 |
return false; |
87 |
} |
88 |
|
89 |
private Driver getDriver(){ |
90 |
return providerFactory.getDriver();
|
91 |
} |
92 |
|
93 |
/**
|
94 |
* Return true if the File extension is accepted by the FileSystemServerProvider
|
95 |
* @param file
|
96 |
* @return
|
97 |
*/
|
98 |
private boolean isAcceptedExtension(File file) { |
99 |
if (file!=null){ |
100 |
String extension=FilenameUtils.getExtension(file.getName());
|
101 |
if (validExtensions != null && !validExtensions.isEmpty()) { |
102 |
for (String validExtension : validExtensions) { |
103 |
if (validExtension.equalsIgnoreCase(extension)) {
|
104 |
return true; |
105 |
} |
106 |
} |
107 |
} else {
|
108 |
return true; |
109 |
} |
110 |
|
111 |
} |
112 |
return false; |
113 |
} |
114 |
|
115 |
/**
|
116 |
* Returns true if the driver can open the file
|
117 |
* @param file
|
118 |
* @return
|
119 |
*/
|
120 |
private boolean isAcceptedByDriver(File file) { |
121 |
String drvName=getDriver().getShortName();
|
122 |
|
123 |
Driver openingDriver=null; |
124 |
openingDriver = gdal.IdentifyDriver(file.getAbsolutePath()); |
125 |
|
126 |
if (openingDriver==null){ |
127 |
return false; |
128 |
} |
129 |
String openingDrvName=openingDriver.getShortName();
|
130 |
return drvName.equalsIgnoreCase(openingDrvName);
|
131 |
} |
132 |
|
133 |
@Override
|
134 |
public int allowCreate() { |
135 |
//If the driver is in the list to be avoided, it will not be created
|
136 |
String drvName=getDriver().getShortName();
|
137 |
if ( Arrays.asList(RasterGdalLibrary.EXCLUDED_STORE_DRIVERS).contains(drvName) ){ |
138 |
return NO;
|
139 |
} |
140 |
String allowCreate=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DCAP_CREATE); |
141 |
String allowCreateCopy=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DCAP_CREATECOPY); |
142 |
|
143 |
if ( (allowCreate!=null && allowCreate.equalsIgnoreCase("YES")) || |
144 |
(allowCreateCopy!=null && allowCreateCopy.equalsIgnoreCase("YES")) ){ |
145 |
return YES;
|
146 |
}else{
|
147 |
return NO;
|
148 |
} |
149 |
} |
150 |
|
151 |
@Override
|
152 |
public String getName() { |
153 |
return providerFactory.getName();
|
154 |
} |
155 |
|
156 |
@Override
|
157 |
public String getDescription() { |
158 |
return providerFactory.getDescription();
|
159 |
} |
160 |
|
161 |
@Override
|
162 |
public int getMode() { |
163 |
return DataServerExplorer.MODE_RASTER;
|
164 |
} |
165 |
|
166 |
@Override
|
167 |
public boolean isMode(int mode) { |
168 |
return getMode()==mode;
|
169 |
} |
170 |
|
171 |
String getNewParamsDefinitionName(){
|
172 |
return newParams;
|
173 |
} |
174 |
|
175 |
/**
|
176 |
* Store Provider factory to be used to create a new store
|
177 |
* @return RasterGdalStoreProviderFactory
|
178 |
*/
|
179 |
public RasterGdalStoreProviderFactory getProviderFactory(){
|
180 |
return this.providerFactory; |
181 |
} |
182 |
} |