1 package liquibase.sqlgenerator.core;
2
3 import liquibase.change.ColumnConfig;
4 import liquibase.database.Database;
5 import liquibase.database.core.SQLiteDatabase;
6 import liquibase.exception.ValidationErrors;
7 import liquibase.sql.Sql;
8 import liquibase.sql.UnparsedSql;
9 import liquibase.sqlgenerator.SqlGenerator;
10 import liquibase.sqlgenerator.SqlGeneratorChain;
11 import liquibase.statement.core.CopyRowsStatement;
12
13 public class CopyRowsGenerator extends AbstractSqlGenerator<CopyRowsStatement> {
14
15 @Override
16 public boolean supports(CopyRowsStatement statement, Database database) {
17 return (database instanceof SQLiteDatabase);
18 }
19
20 public ValidationErrors validate(CopyRowsStatement copyRowsStatement, Database database,
21 SqlGeneratorChain sqlGeneratorChain) {
22 ValidationErrors validationErrors = new ValidationErrors();
23 validationErrors.checkRequiredField("targetTable", copyRowsStatement.getTargetTable());
24 validationErrors.checkRequiredField("sourceTable", copyRowsStatement.getSourceTable());
25 validationErrors.checkRequiredField("copyColumns", copyRowsStatement.getCopyColumns());
26 return validationErrors;
27 }
28
29 public Sql[] generateSql(CopyRowsStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
30 StringBuffer sql = new StringBuffer();
31 if (database instanceof SQLiteDatabase) {
32 sql.append("INSERT INTO `").append(statement.getTargetTable()).append("` SELECT ");
33 for (int i = 0; i < statement.getCopyColumns().size(); i++) {
34 ColumnConfig column = statement.getCopyColumns().get(i);
35 if (i > 0) {
36 sql.append(",");
37 }
38 sql.append("`").append(column.getName()).append("`");
39 }
40 sql.append(" FROM `").append(statement.getSourceTable()).append("`");
41 }
42
43 return new Sql[] { new UnparsedSql(sql.toString()) };
44 }
45 }