16990059345

Committed 15 Aug 2025 12:34PM UTC coverage: 66.782% (-6.6%) from 73.399%

Build # 16990059345

Build Type

push

github

Committed by

torand

Commit Message

chore: access central snapshots

Run Details

294 of 598 branches covered (49.16%)

Branch coverage included in aggregate %.

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37.04

/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 io.github.torand.fastersql.function.singlerow.cast.DataType;

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

    /**
     * Creates a SQLite {@link Dialect} implementation.
     */
    public SqliteDialect() {}

    @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 formatLnFunction(String operand) {
        return "ln(" + 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> getDataType(DataType dataType) {
        // https://www.sqlite.org/datatype3.html
        return Optional.ofNullable(switch(dataType.getIsoDataType()) {
            case BOOLEAN -> "boolean";
            case CHAR -> "char";
            case VARCHAR -> "varchar";
            case BIT -> null;
            case BIT_VARYING -> null;
            case NUMERIC -> "numeric";
            case DECIMAL -> "decimal";
            case INTEGER -> "integer";
            case SMALLINT -> "smallint";
            case FLOAT -> "float";
            case DOUBLE_PRECISION -> "double precision";
            case REAL -> "real";
            case TIME -> null;
            case DATE -> "date";
            case INTERVAL -> null;
            case CHARACTER_LARGE_OBJECT -> "clob";
            case BINARY_LARGE_OBJECT -> "blob";
        });
    }

    @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 io.github.torand.fastersql.function.singlerow.cast.DataType;
19
20	import java.util.EnumSet;
21	import java.util.List;
22	import java.util.Optional;
23
24	import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
25	import static io.github.torand.fastersql.dialect.Capability.CURRENT_TIME;
26	import static io.github.torand.fastersql.dialect.Capability.FULL_OUTER_JOIN;
27	import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
28	import static io.github.torand.fastersql.dialect.Capability.MODULO_OPERATOR;
29	import static io.github.torand.fastersql.dialect.Capability.NULL_ORDERING;
30
31	/**
32	* Defines the <a href="https://www.sqlite.org/lang.html">SQLite</a> SQL dialect.
33	*/
34	public class SqliteDialect implements Dialect {
35	private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, CURRENT_TIME, NULL_ORDERING, FULL_OUTER_JOIN);	26✔
36
37	/**
38	* Creates a SQLite {@link Dialect} implementation.
39	*/
40	public SqliteDialect() {}	3✔
41
42	@Override
43	public String getProductName() {
44	return "SQLite";	2✔
45	}
46
47	@Override
48	public boolean offsetBeforeLimit() {
49	return false;	2✔
50	}
51
52	@Override
53	public Optional<String> formatRowOffsetClause() {
54	return Optional.of("offset ?");	3✔
55	}
56
57	@Override
58	public Optional<String> formatRowLimitClause() {
59	return Optional.of("limit ?");	3✔
60	}
61
62	@Override
63	public Optional<String> formatRowNumLiteral() {
64	return Optional.of("row_number()");	×
65	}
66
67	@Override
68	public String formatToNumberFunction(String operand, int precision, int scale) {
69	return "cast(" + operand + " as decimal)";	3✔
70	}
71
72	@Override
73	public String formatToCharFunction(String operand, String format) {
74	throw new UnsupportedOperationException("SQLite does not support the to_char() function (timestamps are already stored as ISO8601 strings)");	×
75	}
76
77	@Override
78	public String formatSubstringFunction(String operand, int startPos, int length) {
79	return "substr(" + operand + ", " + startPos + ", " + length + ")";	5✔
80	}
81
82	@Override
83	public String formatConcatFunction(List<String> operands) {
84	// Note! The concat infix operator is used in output SQL
85	return "concat(%s)".formatted(String.join(", ", operands));	×
86	}
87
88	@Override
89	public String formatLengthFunction(String operand) {
90	return "length(" + operand + ")";	3✔
91	}
92
93	@Override
94	public String formatCeilFunction(String operand) {
95	return "ceil(" + operand + ")";	3✔
96	}
97
98	@Override
99	public String formatLnFunction(String operand) {
100	return "ln(" + operand + ")";	3✔
101	}
102
103	@Override
104	public String formatRoundFunction(String operand) {
105	return "round(" + operand + ")";	3✔
106	}
107
108	@Override
109	public String formatModuloFunction(String divisor, String dividend) {
110	// Note! The modulo infix operator is used in output SQL
111	return "mod(" + divisor + ", " + dividend + ")";	×
112	}
113
114	@Override
115	public String formatCurrentDateFunction() {
116	return "current_date";	2✔
117	}
118
119	@Override
120	public Optional<String> getDataType(DataType dataType) {
121	// https://www.sqlite.org/datatype3.html
122	return Optional.ofNullable(switch(dataType.getIsoDataType()) {	8!
123	case BOOLEAN -> "boolean";	×
124	case CHAR -> "char";	×
125	case VARCHAR -> "varchar";	2✔
126	case BIT -> null;	×
127	case BIT_VARYING -> null;	×
128	case NUMERIC -> "numeric";	×
129	case DECIMAL -> "decimal";	2✔
130	case INTEGER -> "integer";	×
131	case SMALLINT -> "smallint";	×
132	case FLOAT -> "float";	×
133	case DOUBLE_PRECISION -> "double precision";	×
134	case REAL -> "real";	×
135	case TIME -> null;	×
136	case DATE -> "date";	×
137	case INTERVAL -> null;	×
138	case CHARACTER_LARGE_OBJECT -> "clob";	×
139	case BINARY_LARGE_OBJECT -> "blob";	×
140	});
141	}
142
143	@Override
144	public Optional<String> getConcatOperator() {
145	return Optional.of("\|\|");	3✔
146	}
147
148	@Override
149	public boolean supports(Capability capability) {
150	return SUPPORTED_CAPS.contains(capability);	4✔
151	}
152	}

torand / FasterSQL / 16990059345

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