// Package clause provides the clause interface and common clause implementations for GORM.
package clause

// Interface clause interface
type Interface interface {
	Name() string
	Build(Builder)
	MergeClause(*Clause)
}

// ClauseBuilder clause builder, allows to customize how to build clause
type ClauseBuilder func(Clause, Builder)

type Writer interface {
	WriteByte(byte) error
	WriteString(string) (int, error)
}

	tx = tx.Where("age = ?", 20)
	c, ok := tx.Statement.Clauses["WHERE"]
	if !ok {
		t.Fatalf("WHERE clause expected")
	}
	if where, ok := c.Expression.(clause.Where); !ok || len(where.Exprs) == 0 {
		t.Fatalf("WHERE expressions expected, got %v", c.Expression)
	}

	// Order
	tx = tx.Order("name DESC")
	if _, ok := tx.Statement.Clauses["ORDER BY"]; !ok {
		t.Fatalf("ORDER BY clause expected")
	}

	// Limit / Offset

        assertEquals(5, boolResult.should().size());
    }

    // Test complex query with all clause types
    @Test
    public void test_convertBooleanQuery_complexQuery() {
        BooleanQuery.Builder boolQueryBuilder = new BooleanQuery.Builder();

        // Add multiple clauses of each type
        for (int i = 0; i < 3; i++) {

					}

					rnnColumn := clause.Column{Name: "gorm_preload_rnn"}
					sql := "ROW_NUMBER() OVER (PARTITION BY ? ?)"
					vars := []interface{}{partitionBy}
					if orderBy, ok := q.db.Statement.Clauses["ORDER BY"]; ok {
						vars = append(vars, orderBy)
					} else {
						vars = append(vars, clause.Clause{Name: "ORDER BY", Expression: clause.OrderBy{
							Columns: []clause.OrderByColumn{{Column: clause.PrimaryColumn, Desc: true}},

        final BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        for (final BooleanClause clause : booleanQuery.clauses()) {
            final QueryBuilder queryBuilder = getQueryProcessor().execute(context, clause.query(), boost);
            if (queryBuilder != null) {
                switch (clause.occur()) {
                case MUST:
                    boolQuery.must(queryBuilder);
                    break;

		db.cacheStore.Store(preparedStmtDBKey, preparedStmt)
		db.ConnPool = preparedStmt
	}

	db.Statement = &Statement{
		DB:       db,
		ConnPool: db.ConnPool,
		Context:  context.Background(),
		Clauses:  map[string]clause.Clause{},
	}

	if err == nil && !config.DisableAutomaticPing {
		if pinger, ok := db.ConnPool.(interface{ Ping() error }); ok {
			err = pinger.Ping()
			if err != nil {

    }

    // Test addQuery with no clauses added
    @Test
    public void test_addQuery_withNoClauses() {
        queryContext = new QueryContext("test", false);
        QueryBuilder initialQuery = QueryBuilders.termQuery("field", "value");
        queryContext.setQueryBuilder(initialQuery);

        queryContext.addQuery(boolQuery -> {
            // Don't add any clauses
        });

        if (query instanceof final BooleanQuery booleanQuery) {
            final List<BooleanClause> clauses = booleanQuery.clauses();
            final List<TermQuery> queryList = new ArrayList<>();
            for (final BooleanClause clause : clauses) {
                final Query q = clause.query();
                if (q instanceof BooleanQuery) {
                    queryList.addAll(getTermQueryList(q, fields));

        List<BooleanClause> clauses = ((BooleanQuery) query).clauses();
        assertEquals(TermQuery.class, clauses.get(0).query().getClass());
        assertEquals("_default:fess", clauses.get(0).query().toString());
        assertEquals(Occur.MUST, clauses.get(0).occur());
        assertEquals(TermQuery.class, clauses.get(1).query().getClass());
        assertEquals("_default:codelibs", clauses.get(1).query().toString());

	updateCallback.Clauses = config.UpdateClauses

	rowCallback := db.Callback().Row()
	rowCallback.Register("gorm:row", RowQuery)
	rowCallback.Clauses = config.QueryClauses

	rawCallback := db.Callback().Raw()
	rawCallback.Register("gorm:raw", RawExec)
	rawCallback.Clauses = config.QueryClauses