liquibase.sqlgenerator.core.AddDefaultValueGenerator Maven / Gradle / Ivy
package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.structure.core.Schema;
import liquibase.datatype.DataTypeFactory;
import liquibase.structure.core.Column;
import liquibase.structure.core.Table;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.AddDefaultValueStatement;
public class AddDefaultValueGenerator extends AbstractSqlGenerator {
@Override
public ValidationErrors validate(AddDefaultValueStatement addDefaultValueStatement, Database database, SqlGeneratorChain sqlGeneratorChain) {
ValidationErrors validationErrors = new ValidationErrors();
validationErrors.checkRequiredField("defaultValue", addDefaultValueStatement.getDefaultValue());
validationErrors.checkRequiredField("columnName", addDefaultValueStatement.getColumnName());
validationErrors.checkRequiredField("tableName", addDefaultValueStatement.getTableName());
return validationErrors;
}
@Override
public Sql[] generateSql(AddDefaultValueStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
Object defaultValue = statement.getDefaultValue();
return new Sql[]{
new UnparsedSql("ALTER TABLE " + database.escapeTableName(statement.getCatalogName(), statement.getSchemaName(), statement.getTableName()) + " ALTER COLUMN " + database.escapeColumnName(statement.getCatalogName(), statement.getSchemaName(), statement.getTableName(), statement.getColumnName()) + " SET DEFAULT " + DataTypeFactory.getInstance().fromObject(defaultValue, database).objectToSql(defaultValue, database),
getAffectedColumn(statement))
};
}
protected Column getAffectedColumn(AddDefaultValueStatement statement) {
return new Column()
.setRelation(new Table().setName(statement.getTableName()).setSchema(new Schema(statement.getCatalogName(), statement.getSchemaName())))
.setName(statement.getColumnName());
}
}