tableelementlist


1   package com.daffodilwoods.daffodildb.server.sql99.ddl.schemadefinition;
2   
3   import com.daffodilwoods.daffodildb.server.serversystem.*;
4   import com.daffodilwoods.daffodildb.server.sql99.ddl.descriptors.*;
5   import com.daffodilwoods.database.resource.*;
6   
7   public class tableelementlist implements tablecontentssource {
8      public tableelement[] _OptRepScomma94843605tableelement0;
9   
10     private TableDescriptor tableDescriptor;
11  
12     public void setTableDescriptor(_Descriptor tableDes) throws DException {
13        tableDescriptor = (TableDescriptor) tableDes;
14     }
15  
16     /** Algo
17      * 1. check for unsupported Grammer
18      * 2. getAllTableElements in ArrayList
19      * 3. check at least one column definition is present
20      * 4. execute table elements
21      */
22  
23     /** @todo system column should be created from here insted of table
24      * definition */
25     public Object   run(Object   object) throws DException {
26        checkUnsupprotedGrammer();
27        checkForColumnDefinitionExistance();
28        executeTableElements(tableDescriptor, object);
29        return null;
30     }
31  
32     private void checkUnsupprotedGrammer() throws DException {
33     }
34  
35     /**
36      * checking whether atleast one column definition is specified;
37      */
38  
39     private void checkForColumnDefinitionExistance() throws DException {
40        boolean columnFound = false;
41        for (int i = 0, elementCount = _OptRepScomma94843605tableelement0.length; i < elementCount; i++) {
42           if (!columnFound && _OptRepScomma94843605tableelement0[i] instanceof columndefinition) {
43              columnFound = true;
44           }
45        }
46        if (!columnFound) {
47           throw new DException("DSE956", null);
48        }
49     }
50  
51     private void executeTableElements(TableDescriptor tableDescriptor,
52                                       Object   object) throws DException {
53        executeColumnDefinitions(tableDescriptor, object);
54        executeConstraintDefinitions(tableDescriptor, object);
55     }
56  
57     private void executeColumnDefinitions(TableDescriptor tableDescriptor,
58                                           Object   object) throws
59         DException {
60        for (int i = 0, elementCount = _OptRepScomma94843605tableelement0.length; i < elementCount; i++) {
61           if (_OptRepScomma94843605tableelement0[i] instanceof columndefinition) {
62              _OptRepScomma94843605tableelement0[i].setTableDescriptor(tableDescriptor);
63              _OptRepScomma94843605tableelement0[i].run(object);
64           }
65        }
66     }
67  
68     private void executeConstraintDefinitions(TableDescriptor tableDescriptor,
69                                               Object   object) throws DException {
70        for (int i = 0, elementCount = _OptRepScomma94843605tableelement0.length; i < elementCount; i++) {
71           tableelement tableElement = _OptRepScomma94843605tableelement0[i];
72           if (tableElement instanceof tableconstraintdefinition) {
73              tableElement.setTableDescriptor(tableDescriptor);
74              if (! ( ( (tableconstraintdefinition) tableElement)._tableconstraint1 instanceof
75                     referentialconstraintdefinition)) {
76                 tableElement.run(object);
77              }
78           }
79        }
80     }
81  
82     public void setReferentialConstraints(Object   object) throws DException {
83        for (int i = 0, elementCount = _OptRepScomma94843605tableelement0.length; i < elementCount; i++) {
84           tableelement tableElement = _OptRepScomma94843605tableelement0[i];
85           if (tableElement instanceof tableconstraintdefinition) {
86              if ( ( (tableconstraintdefinition) tableElement)._tableconstraint1 instanceof
87                  referentialconstraintdefinition) {
88                 tableElement.run(object);
89              }
90           } else if (tableElement instanceof columndefinition) {
91              ( (columndefinition) tableElement).setReferentialConstraints( (
92                  _ServerSession) object);
93           }
94        }
95     }
96  
97     /** @todo instance of checking can be removed or not */
98     public void validateCheckConstraintSemantic(Object   object) throws DException {
99        for (int i = 0, elementCount = _OptRepScomma94843605tableelement0.length; i < elementCount; i++) {
100          tableelement tableElement = _OptRepScomma94843605tableelement0[i];
101          if (tableElement instanceof tableconstraintdefinition) {
102             tableconstraintdefinition temp = (tableconstraintdefinition) tableElement;
103             if (temp._tableconstraint1 instanceof checkconstraintdefinition) {
104                ( (checkconstraintdefinition) temp._tableconstraint1).
105                    validateCheckConstraintSemantic( (_ServerSession) object);
106             }
107          } else if (tableElement instanceof columndefinition) {
108             ( (columndefinition) tableElement).validateCheckConstraintSemantic(
109                 (_ServerSession) object);
110          }
111       }
112    }
113 
114    public Object   clone() throws CloneNotSupportedException   {
115       return this;
116    }
117 
118    public String   toString() {
119       StringBuffer   sb = new StringBuffer  ();
120       sb.append(" ");
121       sb.append(_OptRepScomma94843605tableelement0[0]);
122       for (int i = 1; i < _OptRepScomma94843605tableelement0.length; i++) {
123          sb.append(",").append(_OptRepScomma94843605tableelement0[i]);
124       }
125       return sb.toString();
126    }
127 }
128
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