package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.database.core.MSSQLDatabase;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGenerator;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.FindForeignKeyConstraintsStatement;
public class FindForeignKeyConstraintsGeneratorMSSQL extends AbstractSqlGenerator<FindForeignKeyConstraintsStatement> {
@Override
public int getPriority() {
return PRIORITY_DATABASE;
}
@Override
public boolean supports(FindForeignKeyConstraintsStatement statement, Database database) {
return database instanceof MSSQLDatabase;
}
public ValidationErrors validate(FindForeignKeyConstraintsStatement findForeignKeyConstraintsStatement, Database database, SqlGeneratorChain sqlGeneratorChain) {
ValidationErrors validationErrors = new ValidationErrors();
validationErrors.checkRequiredField("baseTableName", findForeignKeyConstraintsStatement.getBaseTableName());
return validationErrors;
}
public Sql[] generateSql(FindForeignKeyConstraintsStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
StringBuilder sb = new StringBuilder();
sb.append("SELECT ");
sb.append("OBJECT_NAME(f.parent_object_id) AS ").append(FindForeignKeyConstraintsStatement.RESULT_COLUMN_BASE_TABLE_NAME).append(", ");
sb.append("COL_NAME(fc.parent_object_id, fc.parent_column_id) AS ").append(FindForeignKeyConstraintsStatement.RESULT_COLUMN_BASE_TABLE_COLUMN_NAME).append(", ");
sb.append("OBJECT_NAME (f.referenced_object_id) AS ").append(FindForeignKeyConstraintsStatement.RESULT_COLUMN_FOREIGN_TABLE_NAME).append(", ");
sb.append("COL_NAME(fc.referenced_object_id, fc.referenced_column_id) AS ").append(FindForeignKeyConstraintsStatement.RESULT_COLUMN_FOREIGN_COLUMN_NAME).append(",");
sb.append("f.name AS ").append(FindForeignKeyConstraintsStatement.RESULT_COLUMN_CONSTRAINT_NAME).append(" ");
sb.append("FROM sys.foreign_keys AS f ");
sb.append("INNER JOIN sys.foreign_key_columns AS fc ");
sb.append("ON f.OBJECT_ID = fc.constraint_object_id ");
sb.append("WHERE OBJECT_NAME(f.parent_object_id) = '").append(statement.getBaseTableName()).append("'");
return new Sql[]{
new UnparsedSql(sb.toString())
};
}
}