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

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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%)

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87.88

/src/main/java/io/github/torand/fastersql/dialect/OracleDialect.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.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 Oracle SQL dialect.
 *
 * <a href="https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/" />
 */
public class OracleDialect implements Dialect {
    private final EnumSet<Capability> supportedCaps;

    public OracleDialect() {
        this(EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, NULL_ORDERING, SELECT_FOR_UPDATE, TRUNCATE_TABLE));
    }

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

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

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

    /**
     * Row offset clause is supported from Oracle 12c onwards
     */
    @Override
    public Optional<String> formatRowOffsetClause() {
        return Optional.of("offset ? rows");
    }

    /**
     * Row limit clause is supported from Oracle 12c onwards
     */
    @Override
    public Optional<String> formatRowLimitClause() {
        return Optional.of("fetch next ? rows only");
    }

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

    @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 "substr(" + operand + ", " + startPos + ", " + length + ")";
    }

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

    @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) {
        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 supportedCaps.contains(capability);
    }

    /**
     * Enables emulating OFFSET and LIMIT constructs for older Oracle versions.
     * Row offset and limit clauses are supported from Oracle 12c onwards.
     * Invoke this method when using previous versions of Oracle, to simulate these clauses with subqueries.
     * @return the modified dialect.
     */
    public OracleDialect withLegacyRowLimiting() {
        EnumSet<Capability> reducedCaps = EnumSet.copyOf(supportedCaps);
        reducedCaps.remove(LIMIT_OFFSET);
        return new OracleDialect(reducedCaps);
    }
}

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.NULL_ORDERING;
25	import static io.github.torand.fastersql.dialect.Capability.SELECT_FOR_UPDATE;
26	import static io.github.torand.fastersql.dialect.Capability.TRUNCATE_TABLE;
27	import static io.github.torand.fastersql.util.lang.StringHelper.generate;
28
29	/**
30	* Defines the Oracle SQL dialect.
31	*
32	* <a href="https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/" />
33	*/
34	public class OracleDialect implements Dialect {
35	private final EnumSet<Capability> supportedCaps;
36
37	public OracleDialect() {
38	this(EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR, NULL_ORDERING, SELECT_FOR_UPDATE, TRUNCATE_TABLE));	8✔
39	}	1✔
40
41	private OracleDialect(EnumSet<Capability> capabilities) {	2✔
42	this.supportedCaps = EnumSet.copyOf(capabilities);	4✔
43	}	1✔
44
45	@Override
46	public String getProductName() {
47	return "Oracle";	2✔
48	}
49
50	@Override
51	public boolean offsetBeforeLimit() {
52	return true;	2✔
53	}
54
55	/**
56	* Row offset clause is supported from Oracle 12c onwards
57	*/
58	@Override
59	public Optional<String> formatRowOffsetClause() {
60	return Optional.of("offset ? rows");	3✔
61	}
62
63	/**
64	* Row limit clause is supported from Oracle 12c onwards
65	*/
66	@Override
67	public Optional<String> formatRowLimitClause() {
68	return Optional.of("fetch next ? rows only");	3✔
69	}
70
71	@Override
72	public Optional<String> formatRowNumLiteral() {
73	return Optional.of("rownum");	3✔
74	}
75
76	@Override
77	public String formatToNumberFunction(String operand, int precision, int scale) {
78	StringBuilder mask = new StringBuilder();	4✔
79	if (precision-scale > 0) {	4!
80	mask.append(generate("9", precision-scale));	8✔
81	}
82	if (scale > 0) {	2!
UNCOV 83	mask.append(".").append(generate("9", scale));	×
84	}
85
86	return "to_number(" + operand + ", '" + mask + "')";	5✔
87	}
88
89	@Override
90	public String formatToCharFunction(String operand, String format) {
91	return "to_char(" + operand + ", " + format + ")";	4✔
92	}
93
94	@Override
95	public String formatSubstringFunction(String operand, int startPos, int length) {
96	return "substr(" + operand + ", " + startPos + ", " + length + ")";	5✔
97	}
98
99	@Override
100	public String formatConcatFunction(List<String> operands) {
UNCOV 101	throw new UnsupportedOperationException("Oracle does not support the concat() function (use the concat infix operator instead)");	×
102	}
103
104	@Override
105	public String formatLengthFunction(String operand) {
106	return "length(" + operand + ")";	3✔
107	}
108
109	@Override
110	public String formatCeilFunction(String operand) {
111	return "ceil(" + operand + ")";	3✔
112	}
113
114	@Override
115	public String formatRoundFunction(String operand) {
116	return "round(" + operand + ")";	3✔
117	}
118
119	@Override
120	public String formatModuloFunction(String divisor, String dividend) {
121	return "mod(" + divisor + ", " + dividend + ")";	4✔
122	}
123
124	@Override
125	public String formatCurrentDateFunction() {
126	return "current_date";	2✔
127	}
128
129	@Override
130	public Optional<String> getConcatOperator() {
131	return Optional.of("\|\|");	3✔
132	}
133
134	@Override
135	public boolean supports(Capability capability) {
136	return supportedCaps.contains(capability);	5✔
137	}
138
139	/**
140	* Enables emulating OFFSET and LIMIT constructs for older Oracle versions.
141	* Row offset and limit clauses are supported from Oracle 12c onwards.
142	* Invoke this method when using previous versions of Oracle, to simulate these clauses with subqueries.
143	* @return the modified dialect.
144	*/
145	public OracleDialect withLegacyRowLimiting() {
146	EnumSet<Capability> reducedCaps = EnumSet.copyOf(supportedCaps);	4✔
147	reducedCaps.remove(LIMIT_OFFSET);	4✔
148	return new OracleDialect(reducedCaps);	5✔
149	}
150	}

torand / FasterSQL / 15294773771

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