16990059345

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

Build # 16990059345

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push

github

Committed by

torand

Commit Message

chore: access central snapshots

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294 of 598 branches covered (49.16%)

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30.43

/src/main/java/io/github/torand/fastersql/dialect/AccessDialect.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.FULL_OUTER_JOIN;
import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
import static io.github.torand.fastersql.dialect.Capability.POWER_OPERATOR;
import static io.github.torand.fastersql.dialect.Capability.SELECT_FOR_UPDATE;
import static io.github.torand.fastersql.dialect.Capability.SET_OPERATION_PARENTHESES;
import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
import static java.util.Objects.isNull;

/**
 * Defines the <a href="https://support.microsoft.com/en-us/office/Queries-93fb69b7-cfc1-4f3e-ab56-b0a01523bb50#ID0EAABAAA=SQL_syntax&id0ebbd=sql_syntax">Microsoft Access</a> SQL dialect.
 */
public class AccessDialect implements Dialect {
    private final EnumSet<Capability> supportedCaps;

    /**
     * Creates a Microsoft Access {@link Dialect} implementation.
     */
    public AccessDialect() {
        this(EnumSet.of(LIMIT_OFFSET, SELECT_FOR_UPDATE, CONCAT_OPERATOR, POWER_OPERATOR, TRUNCATE_TABLE, FULL_OUTER_JOIN, SET_OPERATION_PARENTHESES));
    }

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

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

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

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

    @Override
    public Optional<String> formatRowLimitClause() {
        return Optional.of("fetch next ? rows only");
    }

    @Override
    public Optional<String> formatRowNumLiteral() {
        return Optional.empty();
    }

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

    @Override
    public String formatToCharFunction(String operand, String format) {
        throw new UnsupportedOperationException("Access 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("Access 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 "ceil(" + operand + ")";
    }

    @Override
    public String formatLnFunction(String operand) {
        return "ln(" + operand + ")";
    }

    @Override
    public String formatPowerFunction(String base, String exponent) {
        throw new UnsupportedOperationException("Access does not support the power() function (use the power infix operator instead)");
    }

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

    @Override
    public String formatModuloFunction(String divisor, String dividend) {
        return "mod(" + divisor + ", " + dividend + ")";
    }

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

    @Override
    public String formatCastFunction(String operand, DataType targetType) {
        // https://support.microsoft.com/en-us/office/type-conversion-functions-8ebb0e94-2d43-4975-bb13-87ac8d1a2202
        String function = switch(targetType.getIsoDataType()) {
            case BOOLEAN -> "cbool";
            case CHAR -> "cstr";
            case VARCHAR -> "cstr";
            case BIT -> null;
            case BIT_VARYING -> null;
            case NUMERIC -> "cdec";
            case DECIMAL -> "cdec";
            case INTEGER -> "clng";
            case SMALLINT -> "cint";
            case FLOAT -> "csng";
            case REAL -> "cdbl";
            case DOUBLE_PRECISION -> "cdbl";
            case DATE -> "cdate";
            case TIME -> null;
            case INTERVAL -> null;
            case CHARACTER_LARGE_OBJECT -> null;
            case BINARY_LARGE_OBJECT -> null;
        };

        if (isNull(function)) {
            throw new UnsupportedOperationException("Access does not support the %s data type".formatted(targetType.getIsoDataType().name()));
        }

        return "%s(%s)".formatted(function, operand);
    }

    @Override
    public Optional<String> getDataType(DataType dataType) {
        // https://learn.microsoft.com/en-us/office/client-developer/access/desktop-database-reference/equivalent-ansi-sql-data-types
        return Optional.ofNullable(switch(dataType.getIsoDataType()) {
            case BOOLEAN -> "bit";
            case CHAR -> "char";
            case VARCHAR -> "text";
            case BIT, BIT_VARYING -> "binary";
            case NUMERIC -> null;
            case DECIMAL -> "numeric";
            case INTEGER -> "long";
            case SMALLINT -> "smallint";
            case FLOAT, DOUBLE_PRECISION -> "float";
            case REAL -> "real";
            case DATE, TIME -> "datetime";
            case INTERVAL -> null;
            case CHARACTER_LARGE_OBJECT -> null;
            case BINARY_LARGE_OBJECT -> null;
        });
    }

    @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 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.FULL_OUTER_JOIN;
26	import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
27	import static io.github.torand.fastersql.dialect.Capability.POWER_OPERATOR;
28	import static io.github.torand.fastersql.dialect.Capability.SELECT_FOR_UPDATE;
29	import static io.github.torand.fastersql.dialect.Capability.SET_OPERATION_PARENTHESES;
30	import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
31	import static java.util.Objects.isNull;
32
33	/**
34	* Defines the <a href="https://support.microsoft.com/en-us/office/Queries-93fb69b7-cfc1-4f3e-ab56-b0a01523bb50#ID0EAABAAA=SQL_syntax&id0ebbd=sql_syntax">Microsoft Access</a> SQL dialect.
35	*/
36	public class AccessDialect implements Dialect {
37	private final EnumSet<Capability> supportedCaps;
38
39	/**
40	* Creates a Microsoft Access {@link Dialect} implementation.
41	*/
42	public AccessDialect() {
43	this(EnumSet.of(LIMIT_OFFSET, SELECT_FOR_UPDATE, CONCAT_OPERATOR, POWER_OPERATOR, TRUNCATE_TABLE, FULL_OUTER_JOIN, SET_OPERATION_PARENTHESES));	30✔
44	}	1✔
45
46	private AccessDialect(EnumSet<Capability> capabilities) {	2✔
47	this.supportedCaps = EnumSet.copyOf(capabilities);	4✔
48	}	1✔
49
50	@Override
51	public String getProductName() {
52	return "Access";	2✔
53	}
54
55	@Override
56	public boolean offsetBeforeLimit() {
57	return true;	2✔
58	}
59
60	@Override
61	public Optional<String> formatRowOffsetClause() {
62	return Optional.of("offset ? rows");	3✔
63	}
64
65	@Override
66	public Optional<String> formatRowLimitClause() {
67	return Optional.of("fetch next ? rows only");	3✔
68	}
69
70	@Override
71	public Optional<String> formatRowNumLiteral() {
72	return Optional.empty();	×
73	}
74
75	@Override
76	public String formatToNumberFunction(String operand, int precision, int scale) {
77	return "val(" + operand + ")";	3✔
78	}
79
80	@Override
81	public String formatToCharFunction(String operand, String format) {
82	throw new UnsupportedOperationException("Access does not support the to_char() function");	×
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("Access does not support the concat() function (use the concat infix operator instead)");	×
93	}
94
95	@Override
96	public String formatLengthFunction(String operand) {
97	return "len(" + operand + ")";	3✔
98	}
99
100	@Override
101	public String formatCeilFunction(String operand) {
102	return "ceil(" + operand + ")";	3✔
103	}
104
105	@Override
106	public String formatLnFunction(String operand) {
107	return "ln(" + operand + ")";	3✔
108	}
109
110	@Override
111	public String formatPowerFunction(String base, String exponent) {
112	throw new UnsupportedOperationException("Access does not support the power() function (use the power infix operator instead)");	×
113	}
114
115	@Override
116	public String formatRoundFunction(String operand) {
117	return "round(" + operand + ", 0)";	3✔
118	}
119
120	@Override
121	public String formatModuloFunction(String divisor, String dividend) {
122	return "mod(" + divisor + ", " + dividend + ")";	4✔
123	}
124
125	@Override
126	public String formatCurrentDateFunction() {
127	return "current_date";	2✔
128	}
129
130	@Override
131	public String formatCastFunction(String operand, DataType targetType) {
132	// https://support.microsoft.com/en-us/office/type-conversion-functions-8ebb0e94-2d43-4975-bb13-87ac8d1a2202
133	String function = switch(targetType.getIsoDataType()) {	6!
134	case BOOLEAN -> "cbool";	×
135	case CHAR -> "cstr";	×
136	case VARCHAR -> "cstr";	2✔
137	case BIT -> null;	×
138	case BIT_VARYING -> null;	×
139	case NUMERIC -> "cdec";	×
140	case DECIMAL -> "cdec";	2✔
141	case INTEGER -> "clng";	×
142	case SMALLINT -> "cint";	×
143	case FLOAT -> "csng";	×
144	case REAL -> "cdbl";	×
145	case DOUBLE_PRECISION -> "cdbl";	×
146	case DATE -> "cdate";	×
147	case TIME -> null;	×
148	case INTERVAL -> null;	×
149	case CHARACTER_LARGE_OBJECT -> null;	×
150	case BINARY_LARGE_OBJECT -> null;	1✔
151	};
152
153	if (isNull(function)) {	3!
154	throw new UnsupportedOperationException("Access does not support the %s data type".formatted(targetType.getIsoDataType().name()));	×
155	}
156
157	return "%s(%s)".formatted(function, operand);	13✔
158	}
159
160	@Override
161	public Optional<String> getDataType(DataType dataType) {
162	// https://learn.microsoft.com/en-us/office/client-developer/access/desktop-database-reference/equivalent-ansi-sql-data-types
163	return Optional.ofNullable(switch(dataType.getIsoDataType()) {	×
164	case BOOLEAN -> "bit";	×
165	case CHAR -> "char";	×
166	case VARCHAR -> "text";	×
167	case BIT, BIT_VARYING -> "binary";	×
168	case NUMERIC -> null;	×
169	case DECIMAL -> "numeric";	×
170	case INTEGER -> "long";	×
171	case SMALLINT -> "smallint";	×
172	case FLOAT, DOUBLE_PRECISION -> "float";	×
173	case REAL -> "real";	×
174	case DATE, TIME -> "datetime";	×
175	case INTERVAL -> null;	×
176	case CHARACTER_LARGE_OBJECT -> null;	×
177	case BINARY_LARGE_OBJECT -> null;	×
178	});
179	}
180
181	@Override
182	public Optional<String> getConcatOperator() {
183	return Optional.of("&");	3✔
184	}
185
186	@Override
187	public boolean supports(Capability capability) {
188	return supportedCaps.contains(capability);	5✔
189	}
190	}

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