15346133148

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

Build # 15346133148

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github

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torand

Commit Message

chore: test javadoc publish

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80.95

/src/main/java/io/github/torand/fastersql/dialect/SqlServerDialect.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.LIMIT_OFFSET;
import static io.github.torand.fastersql.dialect.Capability.MODULO_OPERATOR;
import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;

/**
 * Defines the <a href="https://learn.microsoft.com/en-us/sql/sql-server/?view=sql-server-ver16">Microsoft SQL Server</a> SQL dialect.
 */
public class SqlServerDialect implements Dialect {
    private final EnumSet<Capability> supportedCaps;

    /**
     * Creates a Microsoft SQL Server {@link Dialect} implementation.
     */
    public SqlServerDialect() {
        this(EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, TRUNCATE_TABLE));
    }

    private SqlServerDialect(EnumSet<Capability> capabilities) {
        this.supportedCaps = EnumSet.copyOf(capabilities);
    }

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

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

    /**
     * Row offset clause is supported from SQL Server 2012 onwards
     */
    @Override
    public Optional<String> formatRowOffsetClause() {
        return Optional.of("offset ? rows");
    }

    /**
     * Row limit clause is supported from SQL Server 2012 onwards
     */
    @Override
    public Optional<String> formatRowLimitClause() {
        return Optional.of("fetch next ? rows only");
    }

    /**
     * SQL Server has the ROW_NUMBER() function but must be combined with OVER() in this context.
     */
    @Override
    public Optional<String> formatRowNumLiteral() {
        return Optional.empty();
    }

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

    @Override
    public String formatToCharFunction(String operand, String format) {
        throw new UnsupportedOperationException("SQL Server does not support the to_char() function");
    }

    @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("SQL Server does not support the concat() function (use the concat infix operator instead)");
    }

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

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

    @Override
    public String formatRoundFunction(String operand) {
        return "round(" + operand + ", 0)";
    }

    @Override
    public String formatModuloFunction(String divisor, String dividend) {
        throw new UnsupportedOperationException("SQL Server does not support the mod() function (use the modulo infix operator instead)");
    }

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

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

    @Override
    public boolean supports(Capability capability) {
        return supportedCaps.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.LIMIT_OFFSET;
24	import static io.github.torand.fastersql.dialect.Capability.MODULO_OPERATOR;
25	import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
26
27	/**
28	* Defines the <a href="https://learn.microsoft.com/en-us/sql/sql-server/?view=sql-server-ver16">Microsoft SQL Server</a> SQL dialect.
29	*/
30	public class SqlServerDialect implements Dialect {
31	private final EnumSet<Capability> supportedCaps;
32
33	/**
34	* Creates a Microsoft SQL Server {@link Dialect} implementation.
35	*/
36	public SqlServerDialect() {
37	this(EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, MODULO_OPERATOR, TRUNCATE_TABLE));	7✔
38	}	1✔
39
40	private SqlServerDialect(EnumSet<Capability> capabilities) {	2✔
41	this.supportedCaps = EnumSet.copyOf(capabilities);	4✔
42	}	1✔
43
44	@Override
45	public String getProductName() {
46	return "SQL Server";	2✔
47	}
48
49	@Override
50	public boolean offsetBeforeLimit() {
51	return true;	2✔
52	}
53
54	/**
55	* Row offset clause is supported from SQL Server 2012 onwards
56	*/
57	@Override
58	public Optional<String> formatRowOffsetClause() {
59	return Optional.of("offset ? rows");	3✔
60	}
61
62	/**
63	* Row limit clause is supported from SQL Server 2012 onwards
64	*/
65	@Override
66	public Optional<String> formatRowLimitClause() {
67	return Optional.of("fetch next ? rows only");	3✔
68	}
69
70	/**
71	* SQL Server has the ROW_NUMBER() function but must be combined with OVER() in this context.
72	*/
73	@Override
74	public Optional<String> formatRowNumLiteral() {
75	return Optional.empty();	×
76	}
77
78	@Override
79	public String formatToNumberFunction(String operand, int precision, int scale) {
80	return "cast(" + operand + " as numeric(" + precision + "," + scale + "))";	5✔
81	}
82
83	@Override
84	public String formatToCharFunction(String operand, String format) {
85	throw new UnsupportedOperationException("SQL Server does not support the to_char() function");	×
86	}
87
88	@Override
89	public String formatSubstringFunction(String operand, int startPos, int length) {
90	return "substring(" + operand + ", " + startPos + ", " + length + ")";	5✔
91	}
92
93	@Override
94	public String formatConcatFunction(List<String> operands) {
95	throw new UnsupportedOperationException("SQL Server does not support the concat() function (use the concat infix operator instead)");	×
96	}
97
98	@Override
99	public String formatLengthFunction(String operand) {
100	return "len(" + operand + ")";	3✔
101	}
102
103	@Override
104	public String formatCeilFunction(String operand) {
105	return "ceiling(" + operand + ")";	3✔
106	}
107
108	@Override
109	public String formatRoundFunction(String operand) {
110	return "round(" + operand + ", 0)";	3✔
111	}
112
113	@Override
114	public String formatModuloFunction(String divisor, String dividend) {
115	throw new UnsupportedOperationException("SQL Server does not support the mod() function (use the modulo infix operator instead)");	×
116	}
117
118	@Override
119	public String formatCurrentDateFunction() {
120	return "getdate()";	2✔
121	}
122
123	@Override
124	public Optional<String> getConcatOperator() {
125	return Optional.of("+");	3✔
126	}
127
128	@Override
129	public boolean supports(Capability capability) {
130	return supportedCaps.contains(capability);	5✔
131	}
132	}

torand / FasterSQL / 15346133148

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