liquibase.sqlgenerator.core.AddAutoIncrementGenerator Maven / Gradle / Ivy
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Liquibase is a tool for managing and executing database changes.
package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.database.core.*;
import liquibase.datatype.DataTypeFactory;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.AddAutoIncrementStatement;
import liquibase.structure.core.Column;
import liquibase.structure.core.Schema;
import liquibase.structure.core.Table;
public class AddAutoIncrementGenerator extends AbstractSqlGenerator {
@Override
public int getPriority() {
return PRIORITY_DEFAULT;
}
@Override
public boolean supports(AddAutoIncrementStatement statement, Database database) {
return (database.supportsAutoIncrement()
&& !(database instanceof Db2zDatabase)
&& !(database instanceof DerbyDatabase)
&& !(database instanceof MSSQLDatabase)
&& !(database instanceof HsqlDatabase)
&& !(database instanceof H2Database)
&& !(database instanceof OracleDatabase));
}
@Override
public ValidationErrors validate(
AddAutoIncrementStatement statement,
Database database,
SqlGeneratorChain sqlGeneratorChain) {
ValidationErrors validationErrors = new ValidationErrors();
validationErrors.checkRequiredField("columnName", statement.getColumnName());
validationErrors.checkRequiredField("tableName", statement.getTableName());
validationErrors.checkRequiredField("columnDataType", statement.getColumnDataType());
return validationErrors;
}
@Override
public Sql[] generateSql(
AddAutoIncrementStatement statement,
Database database,
SqlGeneratorChain sqlGeneratorChain) {
String sql;
if (database instanceof SybaseASADatabase) {
sql = "ALTER TABLE " +
database.escapeTableName(statement.getCatalogName(), statement.getSchemaName(),
statement.getTableName()) +
" ALTER " +
database.escapeColumnName(statement.getCatalogName(), statement.getSchemaName(), statement
.getTableName(), statement.getColumnName()) +
" SET " +
database.getAutoIncrementClause(statement.getStartWith(), statement.getIncrementBy(), null, null);
} else {
sql = "ALTER TABLE " +
database.escapeTableName(statement.getCatalogName(), statement.getSchemaName(), statement
.getTableName()) +
" MODIFY " +
database.escapeColumnName(statement.getCatalogName(), statement.getSchemaName(), statement
.getTableName(), statement.getColumnName()) +
" " +
DataTypeFactory.getInstance().fromDescription(statement.getColumnDataType() +
"{autoIncrement:true}", database).toDatabaseDataType(database) +
" " +
database.getAutoIncrementClause(statement.getStartWith(), statement.getIncrementBy(), statement.getGenerationType(), statement.getDefaultOnNull());
}
return new Sql[]{
new UnparsedSql(sql, getAffectedColumn(statement))
};
}
protected Column getAffectedColumn(AddAutoIncrementStatement statement) {
return new Column()
.setRelation(new Table().setName(statement.getTableName()).setSchema(
new Schema(statement.getCatalogName(), statement.getSchemaName())))
.setName(statement.getColumnName());
}
}