13591799490

Committed 28 Feb 2025 03:59PM UTC coverage: 65.237% (-1.3%) from 66.563%

Build # 13591799490

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push

github

Committed by

web-flow

Commit Message

Merge pull request #14 from torand/having-support

feat: supporting the HAVING clause + IS NULL operator now supports an…

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214 of 408 branches covered (52.45%)

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273 of 389 new or added lines in 69 files covered. (70.18%)

3 existing lines in 3 files now uncovered.

1079 of 1574 relevant lines covered (68.55%)

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94.74

/src/main/java/io/github/torand/fastersql/function/singlerow/Concat.java

/*
 * Copyright (c) 2024 Tore Eide Andersen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.github.torand.fastersql.function.singlerow;

import io.github.torand.fastersql.Column;
import io.github.torand.fastersql.Context;
import io.github.torand.fastersql.Sql;
import io.github.torand.fastersql.alias.ColumnAlias;
import io.github.torand.fastersql.expression.Expression;
import io.github.torand.fastersql.projection.Projection;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Stream;

import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
import static io.github.torand.fastersql.util.collection.CollectionHelper.streamSafely;
import static io.github.torand.fastersql.util.contract.Requires.requireNonBlank;
import static io.github.torand.fastersql.util.contract.Requires.requireNonEmpty;
import static io.github.torand.fastersql.util.lang.StringHelper.nonBlank;
import static java.util.stream.Collectors.joining;

public class Concat implements SingleRowFunction {
    private final List<Expression> expressions;
    private final ColumnAlias alias;

    Concat(List<Expression> expressions, String alias) {
        this.expressions = new ArrayList<>(requireNonEmpty(expressions, "No expression specified"));
        this.alias = nonBlank(alias) ? new ColumnAlias(alias) : defaultAlias();
    }

    // Sql

    @Override
    public String sql(Context context) {
        if (context.getDialect().supports(CONCAT_OPERATOR)) {
            return streamSafely(expressions).map(e -> e.sql(context)).collect(joining(" || "));
        }

        List<String> expressionsAsSql = streamSafely(expressions).map(e -> e.sql(context)).toList();
        return context.getDialect().formatConcatFunction(expressionsAsSql);
    }

    @Override
    public Stream<Object> params(Context context) {
        return streamSafely(expressions).flatMap(e -> e.params(context));
    }

    @Override
    public Stream<Column> columnRefs() {
        return streamSafely(expressions).flatMap(Sql::columnRefs);
    }

    @Override
    public Stream<ColumnAlias> aliasRefs() {
        return streamSafely(expressions).flatMap(Sql::aliasRefs);
    }

    // Projection

    @Override
    public Projection as(String alias) {
        requireNonBlank(alias, "No alias specified");
        return new Concat(expressions, alias);
    }

    @Override
    public Optional<ColumnAlias> alias() {
        return Optional.ofNullable(alias);
    }

    private ColumnAlias defaultAlias() {
        return ColumnAlias.generate("CONCAT_");
    }
}

1	/*
2	* Copyright (c) 2024 Tore Eide Andersen
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package io.github.torand.fastersql.function.singlerow;
17
18	import io.github.torand.fastersql.Column;
19	import io.github.torand.fastersql.Context;
20	import io.github.torand.fastersql.Sql;
21	import io.github.torand.fastersql.alias.ColumnAlias;
22	import io.github.torand.fastersql.expression.Expression;
23	import io.github.torand.fastersql.projection.Projection;
24
25	import java.util.ArrayList;
26	import java.util.List;
27	import java.util.Optional;
28	import java.util.stream.Stream;
29
30	import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
31	import static io.github.torand.fastersql.util.collection.CollectionHelper.streamSafely;
32	import static io.github.torand.fastersql.util.contract.Requires.requireNonBlank;
33	import static io.github.torand.fastersql.util.contract.Requires.requireNonEmpty;
34	import static io.github.torand.fastersql.util.lang.StringHelper.nonBlank;
35	import static java.util.stream.Collectors.joining;
36
37	public class Concat implements SingleRowFunction {
38	private final List<Expression> expressions;
39	private final ColumnAlias alias;
40
41	Concat(List<Expression> expressions, String alias) {	2✔
42	this.expressions = new ArrayList<>(requireNonEmpty(expressions, "No expression specified"));	10✔
43	this.alias = nonBlank(alias) ? new ColumnAlias(alias) : defaultAlias();	12✔
44	}	1✔
45
46	// Sql
47
48	@Override
49	public String sql(Context context) {
50	if (context.getDialect().supports(CONCAT_OPERATOR)) {	5✔
51	return streamSafely(expressions).map(e -> e.sql(context)).collect(joining(" \|\| "));	15✔
52	}
53
54	List<String> expressionsAsSql = streamSafely(expressions).map(e -> e.sql(context)).toList();	12✔
55	return context.getDialect().formatConcatFunction(expressionsAsSql);	5✔
56	}
57
58	@Override
59	public Stream<Object> params(Context context) {
60	return streamSafely(expressions).flatMap(e -> e.params(context));	11✔
61	}
62
63	@Override
64	public Stream<Column> columnRefs() {
65	return streamSafely(expressions).flatMap(Sql::columnRefs);	6✔
66	}
67
68	@Override
69	public Stream<ColumnAlias> aliasRefs() {
NEW 70	return streamSafely(expressions).flatMap(Sql::aliasRefs);	×
71	}
72
73	// Projection
74
75	@Override
76	public Projection as(String alias) {
77	requireNonBlank(alias, "No alias specified");	6✔
78	return new Concat(expressions, alias);	7✔
79	}
80
81	@Override
82	public Optional<ColumnAlias> alias() {
83	return Optional.ofNullable(alias);	4✔
84	}
85
86	private ColumnAlias defaultAlias() {
87	return ColumnAlias.generate("CONCAT_");	3✔
88	}
89	}

torand / FasterSQL / 13591799490

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