AbstractSessionGenerator


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30  package com.genimen.djeneric.tools.strongtyper;
31  
32  import com.genimen.djeneric.repository.DjExtent;
33  
34  public class AbstractSessionGenerator extends Generator
35  {
36    DjExtent[] _extents = null;
37  
38    public AbstractSessionGenerator(DjExtent[] extents) throws Exception  
39    {
40      _extents = extents;
41      if (extents == null || extents.length == 0) throw new Exception  (
42          "Can not generate a session without any Extents selected");
43    }
44  
45    public String   getClassName()
46    {
47      return getAbstractSessionClassName() + (isAbstract() ? getGeneratedSuffix() : "");
48    }
49  
50    public String   getPackageName()
51    {
52      return getImplPackageName();
53    }
54  
55    public String   getCode() throws Exception  
56    {
57      StringBuffer   code = new StringBuffer  (5000);
58      if (getPackageName().trim().length() > 0) code.append("package " + getPackageName() + ";\n\n");
59  
60      code.append("import java.util.*;\n");
61      code.append("import " + getItfPackageName() + ".*;\n");
62      code.append("import com.genimen.djeneric.repository.*;\n");
63      code.append("import com.genimen.djeneric.repository.rdbms.*;\n");
64      code.append("import com.genimen.djeneric.repository.exceptions.*;\n\n");
65      code.append(StrongTyper.getRegenerationTags(1));
66      code.append("public class " + getClassName() + " extends RdbmsSession implements " + getSessionInterfaceName()
67                  + "\n{\n");
68  
69      code.append("public static String NO_OBJECT_FOUND = \"NO_OBJECT_FOUND\";\n");
70      code.append("public static String MORE_THAN_1_OBJECT_FOUND = \"MORE_THAN_1_OBJECT_FOUND\";\n");
71  
72      for (int i = 0; i < _extents.length; i++)
73      {
74        code.append("  protected DjExtent _" + _extents[i].getName() + "Extent;\n");
75      }
76      code.append("\n" + "  protected " + getClassName() + "(" + getManagerClassName()
77                  + " mgr) throws ObjectNotDefinedException\n" + "  { \n" + "    super(mgr);\n");
78  
79      for (int i = 0; i < _extents.length; i++)
80      {
81        code.append("      _" + _extents[i].getName() + "Extent = mgr.getExtentByObjectType(\""
82                    + _extents[i].getObjectType() + "\");\n");
83      }
84      code.append("  }\n\n" + "  public DjObject createObject(DjExtent extent) throws DjenericException\n" + "  { \n"
85                  + "    if(!isValid())\n" + "      throw new DjenericException(\"Session closed\");\n"
86                  + "    DjObject po = null;\n");
87      for (int i = 0; i < _extents.length; i++)
88      {
89        if (i != 0) code.append("  ");
90        code.append("    if(extent == _" + _extents[i].getName() + "Extent) po = new " + getClassName(_extents[i])
91                    + "(this, extent);\n" + "    else\n");
92      }
93      code.append("      po = super.createObject(extent);\n" + "    return po;\n" + "  }\n\n");
94  
95      code.append("  public DjQueryByExample createQueryByExample(DjExtent extent) throws DjenericException\n" + "  { \n"
96                  + "    if(!isValid())\n" + "      throw new DjenericException(\"Session closed\");\n"
97                  + "    DjQueryByExample qbe = null;\n");
98      for (int i = 0; i < _extents.length; i++)
99      {
100       if (i != 0) code.append("  ");
101       code.append("    if(extent == _" + _extents[i].getName() + "Extent) qbe = new " + getQbeClassName(_extents[i])
102                   + "(this, extent);\n" + "    else\n");
103     }
104     code.append("      qbe = super.createQueryByExample(extent);\n" + "    return qbe;\n" + "  }\n\n");
105 
106     for (int i = 0; i < _extents.length; i++)
107     {
108       code.append("  ");
109 
110       code.append("public " + getInterfaceName(_extents[i]) + " create" + _extents[i].getObjectType() + "() throws "
111                   + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n" + "      return ("
112                   + getInterfaceName(_extents[i]) + ") createObject(_" + _extents[i].getName() + "Extent);\n"
113                   + "    }\n" + "    catch(Exception x)\n" + "    {\n" + "      throw new " + getExceptionClassName()
114                   + "(x);\n" + "    }\n" + "  }\n\n");
115       code.append("  public " + getQbeInterfaceName(_extents[i]) + " create" + _extents[i].getObjectType()
116                   + "Qbe() throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n"
117                   + "      return (" + getQbeInterfaceName(_extents[i]) + ") createQueryByExample(_"
118                   + _extents[i].getName() + "Extent);\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
119                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n" + "  }\n\n");
120       code.append("  public " + getOqlInterfaceName() + " create" + _extents[i].getObjectType() + "Oql() throws "
121                   + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n" + "      return ("
122                   + getOqlInterfaceName() + ") new " + getOqlClassName() + "(_" + _extents[i].getName() + "Extent);\n"
123                   + "    }\n" + "    catch(Exception x)\n" + "    {\n" + "      throw new " + getExceptionClassName()
124                   + "(x);\n" + "    }\n" + "  }\n\n");
125     }
126 
127     for (int i = 0; i < _extents.length; i++)
128     {
129       code.append("  public " + getInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType()
130                   + "(long objectId) throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n"
131                   + "      return (" + getInterfaceName(_extents[i]) + ") getObject(_" + _extents[i].getName()
132                   + "Extent, objectId);\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n" + "      throw new "
133                   + getExceptionClassName() + "(x);\n" + "    }\n" + "  }\n\n");
134 
135       code.append("  public " + getInterfaceName(_extents[i]) + "[] get" + _extents[i].getObjectType()
136                   + "Set() throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n"
137                   + "      return (" + getInterfaceName(_extents[i]) + "[]) getObjects(_" + _extents[i].getName()
138                   + "Extent).toArray(new " + getInterfaceName(_extents[i]) + "[0]);\n" + "    }\n"
139                   + "    catch(Exception x)\n" + "    {\n" + "      throw new " + getExceptionClassName() + "(x);\n"
140                   + "    }\n" + "  }\n\n");
141 
142       code.append("  public " + getCursorInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType()
143                   + "Cursor() throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n" + "    {\n"
144                   + "      return new " + getCursorClassName(_extents[i]) + "(getObjectsCursor(_"
145                   + _extents[i].getName() + "Extent));\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
146                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n" + "  }\n\n");
147 
148       code.append("  public " + getCursorInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType() + "Cursor("
149                   + getQbeInterfaceName(_extents[i]) + " qbe) throws " + getExceptionClassName() + "\n" + "  {\n"
150                   + "    try\n" + "    {\n" + "      return new " + getCursorClassName(_extents[i])
151                   + "(getObjectsCursor((DjQueryByExample)qbe));\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
152                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n" + "  }\n\n");
153 
154       code.append("  public " + getCursorInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType() + "Cursor("
155                   + getOqlInterfaceName() + " oql) throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n"
156                   + "    {\n" + "      return new " + getCursorClassName(_extents[i])
157                   + "(getObjectsCursor((DjOql)oql));\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
158                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n" + "  }\n\n");
159 
160       code.append("  public " + getInterfaceName(_extents[i]) + "[] get" + _extents[i].getObjectType() + "Set("
161                   + getQbeInterfaceName(_extents[i]) + " qbe) throws " + getExceptionClassName() + "\n" + "  {\n"
162                   + "    try\n" + "    {\n" + "      return (" + getInterfaceName(_extents[i]) + "[]) getObjects(("
163                   + getQbeClassName(_extents[i]) + ")qbe).toArray(new " + getInterfaceName(_extents[i]) + "[0]);\n"
164                   + "    }\n" + "    catch(Exception x)\n" + "    {\n" + "      throw new " + getExceptionClassName()
165                   + "(x);\n" + "    }\n" + "  }\n\n");
166 
167       code.append("  public " + getInterfaceName(_extents[i]) + "[] get" + _extents[i].getObjectType() + "Set("
168                   + getOqlInterfaceName() + " oql) throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n"
169                   + "    {\n" + "      return (" + getInterfaceName(_extents[i])
170                   + "[]) getObjects((DjOql)oql).toArray(new " + getInterfaceName(_extents[i]) + "[0]);\n" + "    }\n"
171                   + "    catch(Exception x)\n" + "    {\n" + "      throw new " + getExceptionClassName() + "(x);\n"
172                   + "    }\n" + "  }\n\n");
173 
174       code.append("  public " + getInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType() + "("
175                   + getQbeInterfaceName(_extents[i]) + " qbe) throws " + getExceptionClassName() + ", \n"
176                   + getNotFoundExceptionClassName() + ", \n" + getMultipleFoundExceptionClassName() + " \n" + "  {\n"
177                   + "    DjList result = null;\n" + "    try\n" + "    {\n" + "      result = getObjects(("
178                   + getQbeClassName(_extents[i]) + ")qbe);\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
179                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n"
180                   + "    if(result.size() == 0) throw new " + getNotFoundExceptionClassName() + "(\""
181                   + getInterfaceName(_extents[i]) + " not found\");\n" + "    if(result.size() > 1) throw new "
182                   + getMultipleFoundExceptionClassName() + "(\"More than 1 " + getInterfaceName(_extents[i])
183                   + " found\");\n" + "    return (" + getInterfaceName(_extents[i])
184                   + ")result.getDjenericObjectAt(0);\n" + "  }\n\n");
185 
186       code.append("  public " + getInterfaceName(_extents[i]) + " get" + _extents[i].getObjectType() + "("
187                   + getOqlInterfaceName() + " oql) throws " + getExceptionClassName() + ", \n"
188                   + getNotFoundExceptionClassName() + ", \n" + getMultipleFoundExceptionClassName() + " \n" + "  {\n"
189                   + "    DjList result = null;\n" + "    try\n" + "    {\n"
190                   + "      result = getObjects((DjOql)oql);\n" + "    }\n" + "    catch(Exception x)\n" + "    {\n"
191                   + "      throw new " + getExceptionClassName() + "(x);\n" + "    }\n"
192                   + "    if(result.size() == 0) throw new " + getNotFoundExceptionClassName() + "(\""
193                   + getInterfaceName(_extents[i]) + " not found\");\n" + "    if(result.size() > 1) throw new "
194                   + getMultipleFoundExceptionClassName() + "(\"More than 1 " + getInterfaceName(_extents[i])
195                   + " found\");\n" + "    return (" + getInterfaceName(_extents[i])
196                   + ")result.getDjenericObjectAt(0);\n" + "  }\n\n");
197     }
198 
199     code.append("  public HashMap[] getDomains() throws " + getExceptionClassName() + "\n" + "  {\n" + "    try\n"
200                 + "      {\n" + "        DjDomain[] domains = getPersistenceManager().getDomains();\n"
201                 + "        HashMap[] result = new HashMap[domains.length];\n"
202                 + "        for(int i = 0; i < domains.length; i++)\n" + "          {\n"
203                 + "            result[i] = doGetDomainDefinition(domains[i]);\n" + "          }\n"
204                 + "        return result;\n" + "      }\n" + "    catch(Exception x)\n" + "      {\n"
205                 + "        throw new " + getExceptionClassName() + "(x);\n" + "      }\n" + "  }\n" + "\n"
206                 + "  public HashMap getDomain(String domainName) throws " + getExceptionClassName() + "\n" + "  {\n"
207                 + "    try\n" + "      {\n"
208                 + "        return doGetDomainDefinition(getPersistenceManager().getDomain(domainName));\n"
209                 + "      }\n" + "    catch(Exception x)\n" + "      {\n" + "        throw new "
210                 + getExceptionClassName() + "(x);\n" + "      }\n" + "  }\n" + "\n"
211                 + "  private Object[] getDomainValues(DjDomain domain) throws DjenericException\n" + "  {\n"
212                 + "    DjDomainValue[] validValues = domain.getValidValues();\n"
213                 + "    Object[] result = new Object[validValues.length];\n" + "\n"
214                 + "    for(int i = 0; i < validValues.length; i++)\n"
215                 + "      { result[i] = validValues[i].getValue();\n" + "      }\n" + "    return result;\n" + "  }\n"
216                 + "\n" + "  private String[] getDomainValueDescriptions(DjDomain domain) throws DjenericException\n"
217                 + "  {\n" + "    DjDomainValue[] validValues = domain.getValidValues();\n"
218                 + "    String[] result = new String[validValues.length];\n" + "\n"
219                 + "    for(int i = 0; i < validValues.length; i++)\n"
220                 + "      { result[i] = validValues[i].getDescription();\n" + "      }\n" + "    return result;\n"
221                 + "  }\n" + "\n"
222                 + "  private HashMap doGetDomainDefinition(DjDomain domain) throws DjenericException\n" + "  {\n"
223                 + "    HashMap result = new HashMap();\n" + "    result.put(" + getSessionInterfaceName()
224                 + ".DOMAIN_NAME, domain.getName());\n" + "    result.put(" + getSessionInterfaceName()
225                 + ".DOMAIN_DECIMALS, new Integer(domain.getDecimals()));\n" + "    result.put("
226                 + getSessionInterfaceName() + ".DOMAIN_DESCRIPTION, domain.getDescription());\n" + "    result.put("
227                 + getSessionInterfaceName() + ".DOMAIN_ENFORCE, new Boolean(domain.isEnforced()));\n"
228                 + "    result.put(" + getSessionInterfaceName() + ".DOMAIN_FORMAT_MASK, domain.getFormatMask());\n"
229                 + "    result.put(" + getSessionInterfaceName() + ".DOMAIN_LENGTH, new Integer(domain.getLength()));\n"
230                 + "    result.put(" + getSessionInterfaceName() + ".DOMAIN_TYPE, domain.getNativeTypeAsObject());\n"
231                 + "    result.put(" + getSessionInterfaceName() + ".DOMAIN_VALUES, getDomainValues(domain));\n"
232                 + "    result.put(" + getSessionInterfaceName()
233                 + ".DOMAIN_VALUE_DESCRIPTIONS, getDomainValueDescriptions(domain));\n" + "    return result;\n"
234                 + "  }\n");
235 
236     code.append(StrongTyper.getRegenerationTags(0));
237     code.append("\n}\n");
238 
239     return code.toString();
240   }
241 
242 }
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