15346133148

Committed 30 May 2025 11:50AM UTC coverage: 70.397% (+0.1%) from 70.298%

Build # 15346133148

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push

github

Committed by

torand

Commit Message

chore: test javadoc publish

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235 of 420 branches covered (55.95%)

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1237 of 1671 relevant lines covered (74.03%)

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77.78

/src/main/java/io/github/torand/fastersql/dialect/PostgreSqlDialect.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;
import static io.github.torand.fastersql.dialect.Capability.SELECT_FOR_UPDATE;
import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
import static io.github.torand.fastersql.util.lang.StringHelper.generate;

/**
 * Defines the <a href="https://www.postgresql.org/docs/current/">PostgreSQL</a> SQL dialect
 */
public class PostgreSqlDialect implements Dialect {
    private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, CURRENT_TIME, NULL_ORDERING, SELECT_FOR_UPDATE, TRUNCATE_TABLE);

    /**
     * Creates a PostgreSQL {@link Dialect} implementation.
     */
    public PostgreSqlDialect() {}

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

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

    @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.empty();
    }

    @Override
    public String formatToNumberFunction(String operand, int precision, int scale) {
        StringBuilder mask = new StringBuilder();
        if (precision-scale > 0) {
            mask.append(generate("9", precision-scale));
        }
        if (scale > 0) {
            mask.append(".").append(generate("9", scale));
        }

        return "to_number(" + operand + ", '" + mask + "')";
    }

    @Override
    public String formatToCharFunction(String operand, String format) {
        return "to_char(" + operand + ", " + format + ")";
    }

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

    @Override
    public String formatConcatFunction(List<String> operands) {
        throw new UnsupportedOperationException("PostgreSQL does not support the concat() function (use the concat infix operator instead)");
    }

    @Override
    public String formatLengthFunction(String operand) {
        return "char_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) {
        throw new UnsupportedOperationException("PostgreSQL does not support the mod() function (use the modulo infix operator instead)");
    }

    @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	import static io.github.torand.fastersql.dialect.Capability.SELECT_FOR_UPDATE;
28	import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
29	import static io.github.torand.fastersql.util.lang.StringHelper.generate;
30
31	/**
32	* Defines the <a href="https://www.postgresql.org/docs/current/">PostgreSQL</a> SQL dialect
33	*/
34	public class PostgreSqlDialect implements Dialect {
35	private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, CURRENT_TIME, NULL_ORDERING, SELECT_FOR_UPDATE, TRUNCATE_TABLE);	30✔
36
37	/**
38	* Creates a PostgreSQL {@link Dialect} implementation.
39	*/
40	public PostgreSqlDialect() {}	3✔
41
42	@Override
43	public String getProductName() {
44	return "PostgreSQL";	2✔
45	}
46
47	@Override
48	public boolean offsetBeforeLimit() {
49	return true;	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.empty();	×
65	}
66
67	@Override
68	public String formatToNumberFunction(String operand, int precision, int scale) {
69	StringBuilder mask = new StringBuilder();	4✔
70	if (precision-scale > 0) {	4!
71	mask.append(generate("9", precision-scale));	8✔
72	}
73	if (scale > 0) {	2!
74	mask.append(".").append(generate("9", scale));	×
75	}
76
77	return "to_number(" + operand + ", '" + mask + "')";	5✔
78	}
79
80	@Override
81	public String formatToCharFunction(String operand, String format) {
82	return "to_char(" + operand + ", " + format + ")";	4✔
83	}
84
85	@Override
86	public String formatSubstringFunction(String operand, int startPos, int length) {
87	return "substring(" + operand + ", " + startPos + ", " + length + ")";	5✔
88	}
89
90	@Override
91	public String formatConcatFunction(List<String> operands) {
92	throw new UnsupportedOperationException("PostgreSQL does not support the concat() function (use the concat infix operator instead)");	×
93	}
94
95	@Override
96	public String formatLengthFunction(String operand) {
97	return "char_length(" + operand + ")";	3✔
98	}
99
100	@Override
101	public String formatCeilFunction(String operand) {
102	return "ceil(" + operand + ")";	3✔
103	}
104
105	@Override
106	public String formatRoundFunction(String operand) {
107	return "round(" + operand + ")";	3✔
108	}
109
110	@Override
111	public String formatModuloFunction(String divisor, String dividend) {
112	throw new UnsupportedOperationException("PostgreSQL does not support the mod() function (use the modulo infix operator instead)");	×
113	}
114
115	@Override
116	public String formatCurrentDateFunction() {
117	return "current_date";	2✔
118	}
119
120	@Override
121	public Optional<String> getConcatOperator() {
122	return Optional.of("\|\|");	3✔
123	}
124
125	@Override
126	public boolean supports(Capability capability) {
127	return SUPPORTED_CAPS.contains(capability);	4✔
128	}
129	}

torand / FasterSQL / 15346133148

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