1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
|
19 | |
package rs.mgifos.mosquito.impl.pdm; |
20 | |
|
21 | |
import java.io.InputStream; |
22 | |
import java.util.Hashtable; |
23 | |
|
24 | |
import javax.xml.parsers.SAXParser; |
25 | |
import javax.xml.parsers.SAXParserFactory; |
26 | |
|
27 | |
import org.apache.log4j.Logger; |
28 | |
import org.xml.sax.Attributes; |
29 | |
import org.xml.sax.SAXException; |
30 | |
import org.xml.sax.helpers.DefaultHandler; |
31 | |
|
32 | |
|
33 | |
|
34 | |
|
35 | |
|
36 | |
|
37 | |
|
38 | |
|
39 | 7 | public class JClassResolver { |
40 | |
|
41 | 1 | private Logger logger = Logger.getLogger(this.getClass()); |
42 | |
|
43 | 1 | class SaxHandler extends DefaultHandler { |
44 | |
private static final String PDM_TYPE = "PDMType"; |
45 | |
|
46 | |
private static final String PREC = "Prec"; |
47 | |
|
48 | |
private static final String LEN = "Len"; |
49 | |
|
50 | 1 | private PDMType actualPDMType = null; |
51 | |
|
52 | |
public void startElement(String aUri, String aLocalName, String aQName, |
53 | |
Attributes attributes) throws SAXException { |
54 | |
try { |
55 | 8 | if (PDM_TYPE.equals(aQName)) { |
56 | 7 | String name = attributes.getValue("name"); |
57 | 7 | String jDefaultClass = attributes.getValue("jDefaultClass"); |
58 | 7 | actualPDMType = new PDMType(name, jDefaultClass); |
59 | 7 | ht.put(name, actualPDMType); |
60 | 7 | } else if (PREC.equals(aQName)) { |
61 | 0 | String length = attributes.getValue("length"); |
62 | 0 | String jClass = attributes.getValue("jClass"); |
63 | 0 | PrecType pt = new PrecType(Integer.parseInt(length), jClass); |
64 | 0 | actualPDMType.addPrec(pt); |
65 | 0 | } else if (LEN.equals(aQName)) { |
66 | 0 | String length = attributes.getValue("length"); |
67 | 0 | String jClass = attributes.getValue("jClass"); |
68 | 0 | LenType lt = new LenType(Integer.parseInt(length), jClass); |
69 | 0 | actualPDMType.addLen(lt); |
70 | |
} |
71 | 0 | } catch (Exception e) { |
72 | 0 | logger.error("Sax Parsing xml failed!"); |
73 | 8 | } |
74 | 8 | } |
75 | |
} |
76 | |
|
77 | 1 | private static JClassResolver INSTANCE = null; |
78 | |
|
79 | |
|
80 | |
|
81 | |
|
82 | |
|
83 | |
|
84 | |
public static JClassResolver getInstance() { |
85 | 4 | if (INSTANCE == null) |
86 | 1 | INSTANCE = new JClassResolver(); |
87 | 4 | return INSTANCE; |
88 | |
} |
89 | |
|
90 | 1 | private Hashtable<String, PDMType> ht = new Hashtable<String, PDMType>(); |
91 | |
|
92 | |
private JClassResolver() { |
93 | 1 | super(); |
94 | 1 | this.init(); |
95 | 1 | } |
96 | |
|
97 | |
|
98 | |
|
99 | |
|
100 | |
|
101 | |
|
102 | |
|
103 | |
public String getJClassName(String aType, int aLength, int aPrecision) { |
104 | 26 | String retVal = "java.lang.String"; |
105 | |
try { |
106 | 26 | retVal = ((PDMType) ht.get(aType)) |
107 | |
.getClassName(aLength, aPrecision); |
108 | 1 | } catch (Exception e) { |
109 | 1 | logger.warn("Can't resolve type: '" + aType + "'. Check the existence of this type in jclass_resolver.xml file! Default JClass is java.lang.String!"); |
110 | 1 | retVal = "java.lang.String"; |
111 | 25 | } |
112 | 26 | return retVal; |
113 | |
} |
114 | |
|
115 | |
private void init() { |
116 | |
try { |
117 | 1 | InputStream is = JClassResolver.class |
118 | |
.getResourceAsStream("jclass_resolver.xml"); |
119 | 1 | SAXParserFactory factory = SAXParserFactory.newInstance(); |
120 | 1 | SAXParser saxParser = factory.newSAXParser(); |
121 | 1 | saxParser.parse(is, new SaxHandler()); |
122 | |
|
123 | 0 | } catch (Exception e) { |
124 | 0 | logger.error("Can't init resolver! Cause: " + e.getMessage()); |
125 | 1 | } |
126 | 1 | } |
127 | |
} |