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1 package com.daffodilwoods.daffodildb.server.sql99.expression.
2 stringvalueexpression;
3
4 import com.daffodilwoods.daffodildb.server.datasystem.interfaces.*;
5 import com.daffodilwoods.daffodildb.server.serversystem.*;
6 import com.daffodilwoods.daffodildb.server.sql99.common.*;
7 import com.daffodilwoods.daffodildb.server.sql99.expression.rowvalueexpression.*;
8 import com.daffodilwoods.daffodildb.server.sql99.token.*;
9 import com.daffodilwoods.daffodildb.server.sql99.utils.*;
10 import com.daffodilwoods.daffodildb.utils.*;
11 import com.daffodilwoods.daffodildb.utils.field.*;
12 import com.daffodilwoods.database.resource.*;
13 import com.daffodilwoods.daffodildb.server.sql99.expression.numericvalueexpression.numericvaluefunction;
14
15 public class lengthfunction extends AbstractStringValueExpression implements numericvaluefunction {
16
17 public Srightparen_1874859514 _Srightparen_18748595140;
18 public charactervalueexpression _charactervalueexpression1;
19 public Sleftparen653880241 _Sleftparen6538802412;
20 public SNONRESERVEDWORD136444255 _SNONRESERVEDWORD1364442553;
21
22 public Object  run(Object object) throws com.daffodilwoods.database.resource.
23 DException {
24 FieldBase result = (FieldBase) _charactervalueexpression1.run(object);
25 if (result.isNull()) {
26 return new FieldLiteral(FieldUtility.NULLBUFFERRANGE, Datatype.INTEGER);
27 }
28 return getResult(getDataType(result)
29 , result.getObject());
30 }
31
32 public ColumnDetails[] getChildColumnDetails() throws DException {
33 return columnDetails;
34 }
35
36 public ParameterInfo[] getParameterInfo() throws DException {
37 ParameterInfo[] param = _charactervalueexpression1.getParameterInfo();
38 for (int i = 0; i < param.length; i++) {
39 if (param[i].getQuestionMark()) {
40 param[i].setDataType(Datatypes.CHARACTER);
41 param[i].setName("LENGTH Arg");
42 return param;
43 }
44 }
45 return getThisParameterInfo();
46 }
47
48 protected ParameterInfo[] getThisParameterInfo() throws DException {
49 ParameterInfo parameterInfo = new ParameterInfo();
50 parameterInfo.setName(toString());
51 parameterInfo.setDataType(Datatypes.INTEGER);
52 return new ParameterInfo[] {
53 parameterInfo};
54 }
55
56 protected String getNameOfColumn(ColumnDetails[] columnDetails) throws
57 DException {
58 String nameOfColumn = "";
59 for (int i = 0; i < columnDetails.length; ++i) {
60 nameOfColumn += columnDetails[i].getColumn();
61 }
62 return nameOfColumn;
63 }
64
65
85
86 private Object getResult(int type, Object object) throws DException {
87 switch (type) {
88 case BYTE:
89 case TINYINT:
90 case SHORT:
91 case SMALLINT:
92 case INTEGER:
93 case INT:
94 case REAL:
95 case DOUBLE:
96 case FLOAT:
97 case DOUBLEPRECISION:
98 case LONG:
99 case BIGINT:
100 case BIGDECIMAL:
101 case DEC:
102 case DECIMAL:
103 case NUMERIC:
104 Number operand = (Number ) object;
105 return new FieldLiteral(new Integer (operand.toString().length()), Datatype.INTEGER);
106 case CHARACTER:
107 case VARCHAR:
108 case CHAR:
109 case CHARACTERVARYING:
110 String string = (String ) object;
111 return new FieldLiteral(new Integer (string.length()), Datatype.INTEGER);
112 default:
113 throw new DException("DSE514", new Object [] {StaticClass.getDataTypeName(type)});
114 }
115 }
116
117
146
147 public AbstractRowValueExpression[] getChilds() {
148 AbstractRowValueExpression[] childs = new AbstractRowValueExpression[] {
149 (AbstractRowValueExpression) (_charactervalueexpression1)};
150 return childs;
151
152 }
153
154 public String getType() throws DException {
155 return (String ) _SNONRESERVEDWORD1364442553.run(null);
156 }
157
158 public String toString() {
159 StringBuffer sb = new StringBuffer ();
160 sb.append(" ");
161 sb.append(_SNONRESERVEDWORD1364442553);
162 sb.append(" ");
163 sb.append(_Sleftparen6538802412);
164 sb.append(" ");
165 sb.append(_charactervalueexpression1);
166 sb.append(" ");
167 sb.append(_Srightparen_18748595140);
168 return sb.toString();
169 }
170
171 public Object clone() throws CloneNotSupportedException {
172 lengthfunction tempClass = new lengthfunction();
173 tempClass._Srightparen_18748595140 = (Srightparen_1874859514)
174 _Srightparen_18748595140.clone();
175 tempClass._charactervalueexpression1 = (charactervalueexpression)
176 _charactervalueexpression1.clone();
177 tempClass._Sleftparen6538802412 = (Sleftparen653880241)
178 _Sleftparen6538802412.clone();
179 tempClass._SNONRESERVEDWORD1364442553 = (SNONRESERVEDWORD136444255)
180 _SNONRESERVEDWORD1364442553.clone();
181 return tempClass;
182 }
183
184 public ByteComparison getByteComparison(Object object) throws DException {
185 return new ByteComparison(false, new int[] {INTEGER});
186 }
187
188 public _Reference[] checkSemantic(_ServerSession parent) throws DException {
189 _Reference[] ref = super.checkSemantic(parent);
190 if(ref!=null) {
191 return ref;
192 }
193 int type = _charactervalueexpression1.getByteComparison(parent).getDataTypes()[0];
194 switch (type) {
195 case -1:
196 case BYTE:
197 case TINYINT:
198 case SHORT:
199 case SMALLINT:
200 case INTEGER:
201 case INT:
202 case REAL:
203 case DOUBLE:
204 case FLOAT:
205 case DOUBLEPRECISION:
206 case LONG:
207 case BIGINT:
208 case BIGDECIMAL:
209 case DEC:
210 case DECIMAL:
211 case NUMERIC:
212 case CHARACTER:
213 case VARCHAR:
214 case CHAR:
215 case CHARACTERVARYING:
216 return ref;
217 default:
218 throw new DException("DSE514", new Object [] {StaticClass.getDataTypeName(type)});
219 }
220
221 }
222
223 public int getColumnSize(Object object) throws DException {
224 return Datatypes.INTSIZE;
225 }
226
227 }
228 |
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