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1 package com.daffodilwoods.daffodildb.server.sql99.expression.expressionprimary;
2
3 import com.daffodilwoods.daffodildb.server.sql99.common.*;
4 import com.daffodilwoods.daffodildb.server.sql99.dql.iterator.*;
5 import com.daffodilwoods.daffodildb.server.sql99.dql.listenerevents.*;
6 import com.daffodilwoods.daffodildb.server.sql99.expression.rowvalueexpression.*;
7 import com.daffodilwoods.daffodildb.server.sql99.utils.*;
8 import com.daffodilwoods.daffodildb.utils.*;
9 import com.daffodilwoods.daffodildb.utils.field.*;
10 import com.daffodilwoods.database.resource.*;
11
12 public class scalarsubquery extends AbstractValueExpressionPrimary implements nonparenthesizedvalueexpressionprimary, valueexpressionprimary, rowvalueexpression {
13 public subquery _scalarsubquery0;
14
15 private boolean firstTime;
16 private int cardinality;
17
18 public Object  run(Object object) throws com.daffodilwoods.database.resource.DException {
19 _Iterator iterator = (_Iterator) _scalarsubquery0.run(object);
20 if (iterator.first()) {
21 Object row = ( (_SelectIterator) iterator).getSelectColumnValues();
22 if (iterator.next()) {
23 throw new DException("DSE325", null);
24 }
25 return ( (Object []) row)[0];
26 }
27 return new FieldLiteral(FieldUtility.NULLBUFFERRANGE, _scalarsubquery0._queryexpression0.getSelectedColumns()[0].getDatatype());
28 }
29
30 public ParameterInfo[] getParameterInfo() throws DException {
31 return _scalarsubquery0.getParameterInfo();
32 }
33
34 public AbstractRowValueExpression[] getChilds() {
35 AbstractRowValueExpression[] childs = new AbstractRowValueExpression[] { (AbstractRowValueExpression) (_scalarsubquery0)};
36 return childs;
37
38 }
39
40 public int getCardinality() throws DException {
41 if (_scalarsubquery0.getColumnCount() > 1) {
42 throw new DException("DSE7064", null);
43 }
44 return 1;
45 }
46
47 public String toString() {
48
49 StringBuffer sb = new StringBuffer ();
50 sb.append(" ");
51 sb.append(_scalarsubquery0);
52 return sb.toString();
53 }
54
55 public Object clone() throws CloneNotSupportedException {
56 scalarsubquery tempClass = new scalarsubquery();
57 tempClass._scalarsubquery0 = (subquery) _scalarsubquery0.clone();
58 return tempClass;
59 }
60
61 public byte[][] getByte(_VariableValues variableValues) throws DException {
62 throw new UnsupportedOperationException ("Not Supported yet");
63 }
64
65 public Object getObject(_VariableValues variableValues) throws DException {
66 throw new UnsupportedOperationException ("Not Supported yet");
67 }
68 }
69 |
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