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1 package com.daffodilwoods.daffodildb.server.sql99.ddl.schemamanipulation;
2
3 import com.daffodilwoods.database.resource.*;
4 import com.daffodilwoods.daffodildb.server.sql99.token.*;
5 import com.daffodilwoods.daffodildb.server.sql99.ddl.descriptors.*;
6 import com.daffodilwoods.daffodildb.server.sql99.dql.iterator._Iterator;
7 import java.util.ArrayList  ;
8 import com.daffodilwoods.daffodildb.server.serversystem.*;
9 import com.daffodilwoods.database.general.*;
10 import com.daffodilwoods.database.sqlinitiator.*;
11 import com.daffodilwoods.daffodildb.server.sql99.utils._Reference;
12 import com.daffodilwoods.daffodildb.server.sql99.dql.listenerevents.*;
13 import com.daffodilwoods.daffodildb.server.sql99.dql.iterator._SelectQueryIterator;
14 import com.daffodilwoods.daffodildb.server.sql99.ddl.utility.QueryMaker;
15
16 public class dropdomaindefaultclause
17 implements alterdomainaction {
18 public SRESERVEDWORD1206543922 _SRESERVEDWORD12065439220;
19 public SRESERVEDWORD1206543922 _SRESERVEDWORD12065439221;
20
21
22
23
24 private DomainDescriptor domainDescriptor;
25 private ArrayList tableList;
26 public void setDomainDescriptor(_Descriptor domainDes) throws
27 DException {
28 domainDescriptor = (DomainDescriptor) domainDes;
29 }
30
31
32 public Object run(Object object) throws DException {
33 _ServerSession currentSession = (_ServerSession) object;
34 _ServerSession systemSession = currentSession.getSystemServerSession();
35 if(domainDescriptor.default_clause != null){
36 updateDomainDefault(currentSession);
37 updateColumnsDefault(currentSession) ;
38 }
39 refreshServerSystem(systemSession, domainDescriptor);
40 return null;
41 }
42
43
44 private void refreshServerSystem(_ServerSession systemSession,
45 DomainDescriptor domainDescriptor) throws
46 DException {
47 if(tableList!=null)
48 {
49 for (int i=0, size=tableList.size();i<size;i++)
50 {
51 QualifiedIdentifier tableName=(QualifiedIdentifier)tableList.get(i);
52 systemSession.deleteTable(tableName, false);
53 }
54 }
55 }
56
57
58 private void updateDomainDefault(_ServerSession currentSession) throws DException{
59 domainDescriptor.update(currentSession,
60 new int[] {
61 SystemTablesFields.domain_default_clause} ,new Object [] {null});
62 }
63
64 private void updateColumnsDefault(_ServerSession currentSession) throws DException{
65 ArrayList columnDescriptors = domainDescriptor.
66 getColumnDescriptorsForDomain(currentSession);
67 if (columnDescriptors != null) {
68 int size = columnDescriptors.size();
69 tableList = new ArrayList (size);
70 for (int i = 0; i < size; i++) {
71 ColumnDescriptor columnDescriptor = (ColumnDescriptor) columnDescriptors.get(i);
72 QualifiedIdentifier tableName = columnDescriptor.getQualifiedTableName();
73 if(!tableList.contains(tableName))
74 tableList.add(tableName);
75 columnDescriptor.update(currentSession,
76 new int[] {
77 SystemTablesFields.columns_column_default} ,new Object [] {null});
78 }
79 }
80 }
81
82 private void check_syntax() throws DException {
83 if (domainDescriptor.default_clause == null)
84 throw new DException("DSE323", null);
85 }
86
87 public Object clone() throws CloneNotSupportedException {
88 return this;
89 }
90 public String toString()
91 {
92 StringBuffer sb = new StringBuffer ();
93 sb.append(" ");
94 sb.append(_SRESERVEDWORD12065439221);
95 sb.append(" ");
96 sb.append(_SRESERVEDWORD12065439220);
97 return sb.toString();
98 }
99 }
100 |
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