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1 package org.hibernate.dialect.function;
3
4 import java.util.List  ;
5
6 import org.hibernate.QueryException;
7 import org.hibernate.engine.Mapping;
8 import org.hibernate.engine.SessionFactoryImplementor;
9 import org.hibernate.type.Type;
10
11
16 public class VarArgsSQLFunction implements SQLFunction {
17
18 private final String begin;
19 private final String sep;
20 private final String end;
21 private final Type type;
22
23 public VarArgsSQLFunction(Type type, String begin, String sep, String end) {
24 this.begin = begin;
25 this.sep = sep;
26 this.end = end;
27 this.type = type;
28 }
29
30 public VarArgsSQLFunction(String begin, String sep, String end) {
31 this.begin = begin;
32 this.sep = sep;
33 this.end = end;
34 this.type = null;
35 }
36
37 public Type getReturnType(Type columnType, Mapping mapping) throws QueryException {
38 return type==null ? columnType : type;
39 }
40
41 public boolean hasArguments() {
42 return true;
43 }
44
45 public boolean hasParenthesesIfNoArguments() {
46 return true;
47 }
48
49 public String render(List args, SessionFactoryImplementor factory) throws QueryException {
50 StringBuffer buf = new StringBuffer ().append(begin);
51 for ( int i=0; i<args.size(); i++ ) {
52 buf.append( args.get(i) );
53 if (i<args.size()-1) buf.append(sep);
54 }
55 return buf.append(end).toString();
56 }
57
58 }
59 |
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