15294773771

Committed 28 May 2025 08:01AM UTC coverage: 70.078% (+0.2%) from 69.877%

Build # 15294773771

Build Type

Pull #31

github

Committed by

web-flow

Commit Message

Merge 9f1c324c0 into 6be86da23

Pull Request Pull Request #31: feat: add support for SQLite dialect

Coverage Stats

233 of 418 branches covered (55.74%)

Branch coverage included in aggregate %.

28 of 33 new or added lines in 12 files covered. (84.85%)

45 existing lines in 10 files now uncovered.

1212 of 1644 relevant lines covered (73.72%)

3.91 hits per line

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77.78

/src/main/java/io/github/torand/fastersql/dialect/SqliteDialect.java

/*
 * Copyright (c) 2024-2025 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.dialect;

import java.util.EnumSet;
import java.util.List;
import java.util.Optional;

import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
import static io.github.torand.fastersql.dialect.Capability.CURRENT_TIME;
import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
import static io.github.torand.fastersql.dialect.Capability.MODULO_OPERATOR;
import static io.github.torand.fastersql.dialect.Capability.NULL_ORDERING;

/**
 * Defines the SQLite SQL dialect.
 *
 * <a href="https://www.sqlite.org/lang.html" />
 */
public class SqliteDialect implements Dialect {
    private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, CURRENT_TIME, NULL_ORDERING);

    @Override
    public String getProductName() {
        return "SQLite";
    }

    @Override
    public boolean offsetBeforeLimit() {
        return false;
    }

    @Override
    public Optional<String> formatRowOffsetClause() {
        return Optional.of("offset ?");
    }

    @Override
    public Optional<String> formatRowLimitClause() {
        return Optional.of("limit ?");
    }

    @Override
    public Optional<String> formatRowNumLiteral() {
        return Optional.of("row_number()");
    }

    @Override
    public String formatToNumberFunction(String operand, int precision, int scale) {
        return "cast(" + operand + " as decimal)";
    }

    @Override
    public String formatToCharFunction(String operand, String format) {
        throw new UnsupportedOperationException("SQLite does not support the to_char() function (timestamps are already stored as ISO8601 strings)");
    }

    @Override
    public String formatSubstringFunction(String operand, int startPos, int length) {
        return "substr(" + operand + ", " + startPos + ", " + length + ")";
    }

    @Override
    public String formatConcatFunction(List<String> operands) {
        // Note! The concat infix operator is used in output SQL
        return "concat(%s)".formatted(String.join(", ", operands));
    }

    @Override
    public String formatLengthFunction(String operand) {
        return "length(" + operand + ")";
    }

    @Override
    public String formatCeilFunction(String operand) {
        return "ceil(" + operand + ")";
    }

    @Override
    public String formatRoundFunction(String operand) {
        return "round(" + operand + ")";
    }

    @Override
    public String formatModuloFunction(String divisor, String dividend) {
        // Note! The modulo infix operator is used in output SQL
        return "mod(" + divisor + ", " + dividend + ")";
    }

    @Override
    public String formatCurrentDateFunction() {
        return "current_date";
    }

    @Override
    public Optional<String> getConcatOperator() {
        return Optional.of("||");
    }

    @Override
    public boolean supports(Capability capability) {
        return SUPPORTED_CAPS.contains(capability);
    }
}

1	/*
2	* Copyright (c) 2024-2025 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.dialect;
17
18	import java.util.EnumSet;
19	import java.util.List;
20	import java.util.Optional;
21
22	import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
23	import static io.github.torand.fastersql.dialect.Capability.CURRENT_TIME;
24	import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
25	import static io.github.torand.fastersql.dialect.Capability.MODULO_OPERATOR;
26	import static io.github.torand.fastersql.dialect.Capability.NULL_ORDERING;
27
28	/**
29	* Defines the SQLite SQL dialect.
30	*
31	* <a href="https://www.sqlite.org/lang.html" />
32	*/
33	public class SqliteDialect implements Dialect {	3✔
34	private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, CURRENT_TIME, NULL_ORDERING);	8✔
35
36	@Override
37	public String getProductName() {
38	return "SQLite";	2✔
39	}
40
41	@Override
42	public boolean offsetBeforeLimit() {
43	return false;	2✔
44	}
45
46	@Override
47	public Optional<String> formatRowOffsetClause() {
48	return Optional.of("offset ?");	3✔
49	}
50
51	@Override
52	public Optional<String> formatRowLimitClause() {
53	return Optional.of("limit ?");	3✔
54	}
55
56	@Override
57	public Optional<String> formatRowNumLiteral() {
NEW 58	return Optional.of("row_number()");	×
59	}
60
61	@Override
62	public String formatToNumberFunction(String operand, int precision, int scale) {
63	return "cast(" + operand + " as decimal)";	3✔
64	}
65
66	@Override
67	public String formatToCharFunction(String operand, String format) {
NEW 68	throw new UnsupportedOperationException("SQLite does not support the to_char() function (timestamps are already stored as ISO8601 strings)");	×
69	}
70
71	@Override
72	public String formatSubstringFunction(String operand, int startPos, int length) {
73	return "substr(" + operand + ", " + startPos + ", " + length + ")";	5✔
74	}
75
76	@Override
77	public String formatConcatFunction(List<String> operands) {
78	// Note! The concat infix operator is used in output SQL
NEW 79	return "concat(%s)".formatted(String.join(", ", operands));	×
80	}
81
82	@Override
83	public String formatLengthFunction(String operand) {
84	return "length(" + operand + ")";	3✔
85	}
86
87	@Override
88	public String formatCeilFunction(String operand) {
89	return "ceil(" + operand + ")";	3✔
90	}
91
92	@Override
93	public String formatRoundFunction(String operand) {
94	return "round(" + operand + ")";	3✔
95	}
96
97	@Override
98	public String formatModuloFunction(String divisor, String dividend) {
99	// Note! The modulo infix operator is used in output SQL
NEW 100	return "mod(" + divisor + ", " + dividend + ")";	×
101	}
102
103	@Override
104	public String formatCurrentDateFunction() {
105	return "current_date";	2✔
106	}
107
108	@Override
109	public Optional<String> getConcatOperator() {
110	return Optional.of("\|\|");	3✔
111	}
112
113	@Override
114	public boolean supports(Capability capability) {
115	return SUPPORTED_CAPS.contains(capability);	4✔
116	}
117	}

torand / FasterSQL / 15294773771

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