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1 package org.hibernate.criterion;
3
4 import java.util.ArrayList  ;
5 import java.util.List ;
6
7 import org.hibernate.Criteria;
8 import org.hibernate.HibernateException;
9 import org.hibernate.type.Type;
10 import org.hibernate.util.ArrayHelper;
11
12
15 public class ProjectionList implements Projection {
16
17 private List elements = new ArrayList ();
18
19 protected ProjectionList() {}
20
21 public ProjectionList create() {
22 return new ProjectionList();
23 }
24
25 public ProjectionList add(Projection proj) {
26 elements.add(proj);
27 return this;
28 }
29
30 public ProjectionList add(Projection projection, String alias) {
31 return add( Projections.alias(projection, alias) );
32 }
33
34 public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
35 throws HibernateException {
36 List types = new ArrayList ( getLength() );
37 for ( int i=0; i<getLength(); i++ ) {
38 Type[] elemTypes = getProjection(i).getTypes(criteria, criteriaQuery);
39 ArrayHelper.addAll(types, elemTypes);
40 }
41 return ArrayHelper.toTypeArray(types);
42 }
43
44 public String toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery)
45 throws HibernateException {
46 StringBuffer buf = new StringBuffer ();
47 for ( int i=0; i<getLength(); i++ ) {
48 Projection proj = getProjection(i);
49 buf.append( proj.toSqlString(criteria, loc, criteriaQuery) );
50 loc += proj.getColumnAliases(loc).length;
51 if ( i<elements.size()-1 ) buf.append(", ");
52 }
53 return buf.toString();
54 }
55
56 public String toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
57 throws HibernateException {
58 StringBuffer buf = new StringBuffer ();
59 for ( int i=0; i<getLength(); i++ ) {
60 Projection proj = getProjection(i);
61 if ( proj.isGrouped() ) {
62 buf.append( proj.toGroupSqlString(criteria, criteriaQuery) )
63 .append(", ");
64 }
65 }
66 if ( buf.length()>2 ) buf.setLength( buf.length()-2 ); return buf.toString();
68 }
69
70 public String [] getColumnAliases(int loc) {
71 List result = new ArrayList ( getLength() );
72 for ( int i=0; i<getLength(); i++ ) {
73 String [] colAliases = getProjection(i).getColumnAliases(loc);
74 ArrayHelper.addAll(result, colAliases);
75 loc+=colAliases.length;
76 }
77 return ArrayHelper.toStringArray(result);
78 }
79
80 public String [] getColumnAliases(String alias, int loc) {
81 for ( int i=0; i<getLength(); i++ ) {
82 String [] result = getProjection(i).getColumnAliases(alias, loc);
83 if (result!=null) return result;
84 loc += getProjection(i).getColumnAliases(loc).length;
85 }
86 return null;
87 }
88
89 public Type[] getTypes(String alias, Criteria criteria, CriteriaQuery criteriaQuery) {
90 for ( int i=0; i<getLength(); i++ ) {
91 Type[] result = getProjection(i).getTypes(alias, criteria, criteriaQuery);
92 if (result!=null) return result;
93 }
94 return null;
95 }
96
97 public String [] getAliases() {
98 List result = new ArrayList ( getLength() );
99 for ( int i=0; i<getLength(); i++ ) {
100 String [] aliases = getProjection(i).getAliases();
101 ArrayHelper.addAll(result, aliases);
102 }
103 return ArrayHelper.toStringArray(result);
104
105 }
106
107 public Projection getProjection(int i) {
108 return (Projection) elements.get(i);
109 }
110
111 public int getLength() {
112 return elements.size();
113 }
114
115 public String toString() {
116 return elements.toString();
117 }
118
119 public boolean isGrouped() {
120 for ( int i=0; i<getLength(); i++ ) {
121 if ( getProjection(i).isGrouped() ) return true;
122 }
123 return false;
124 }
125 }
126 |
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