13367709795

Committed 17 Feb 2025 10:06AM UTC coverage: 58.785% (+2.0%) from 56.762%

Build # 13367709795

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push

github

Committed by

torand

Commit Message

feat: support length function

Run Details

148 of 338 branches covered (43.79%)

Branch coverage included in aggregate %.

10 of 17 new or added lines in 7 files covered. (58.82%)

66 existing lines in 9 files now uncovered.

829 of 1324 relevant lines covered (62.61%)

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57.69

/src/main/java/io/github/torand/fastersql/dialect/OracleDialect.java

/*
 * Copyright (c) 2024 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.util.lang.StringHelper.generate;

public class OracleDialect implements Dialect {
    private final EnumSet<Capability> supportedCaps;

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

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

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

    /**
     * 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 formatSubstringFunction(String operand, int startPos, int length) {
        return "substr(" + operand + ", " + startPos + ", " + length + ")";
    }

    @Override
    public String formatConcatFunction(List<String> operands) {
        throw new UnsupportedOperationException("Use the concat infix operator for Oracle");
    }

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

    @Override
    public boolean supports(Capability capability) {
        return supportedCaps.contains(capability);
    }

    /**
     * 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.
     */
    public OracleDialect withLegacyRowLimiting() {
        EnumSet<Capability> reducedCaps = EnumSet.copyOf(supportedCaps);
        reducedCaps.remove(LIMIT_OFFSET);
        return new OracleDialect(reducedCaps);
    }
}

1	/*
2	* Copyright (c) 2024 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.util.lang.StringHelper.generate;
25
26	public class OracleDialect implements Dialect {
27	private final EnumSet<Capability> supportedCaps;
28
29	public OracleDialect() {
30	this(EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR));	5✔
31	}	1✔
32
33	private OracleDialect(EnumSet<Capability> capabilities) {	2✔
34	this.supportedCaps = EnumSet.copyOf(capabilities);	4✔
35	}	1✔
36
37	@Override
38	public String getProductName() {
39	return "Oracle";	2✔
40	}
41
42	/**
43	* Row offset clause is supported from Oracle 12c onwards
44	*/
45	@Override
46	public Optional<String> formatRowOffsetClause() {
47	return Optional.of("offset ? rows");	3✔
48	}
49
50	/**
51	* Row limit clause is supported from Oracle 12c onwards
52	*/
53	@Override
54	public Optional<String> formatRowLimitClause() {
55	return Optional.of("fetch next ? rows only");	3✔
56	}
57
58	@Override
59	public Optional<String> formatRowNumLiteral() {
60	return Optional.of("rownum");	3✔
61	}
62
63	@Override
64	public String formatToNumberFunction(String operand, int precision, int scale) {
UNCOV 65	StringBuilder mask = new StringBuilder();	×
66	if (precision-scale > 0) {	×
67	mask.append(generate("9", precision-scale));	×
68	}
UNCOV 69	if (scale > 0) {	×
70	mask.append(".").append(generate("9", scale));	×
71	}
72
UNCOV 73	return "to_number(" + operand + ", '" + mask + "')";	×
74	}
75
76	@Override
77	public String formatSubstringFunction(String operand, int startPos, int length) {
78	return "substr(" + operand + ", " + startPos + ", " + length + ")";	5✔
79	}
80
81	@Override
82	public String formatConcatFunction(List<String> operands) {
UNCOV 83	throw new UnsupportedOperationException("Use the concat infix operator for Oracle");	×
84	}
85
86	@Override
87	public String formatLengthFunction(String operand) {
88	return "length(" + operand + ")";	3✔
89	}
90
91	@Override
92	public boolean supports(Capability capability) {
93	return supportedCaps.contains(capability);	5✔
94	}
95
96	/**
97	* Row offset and limit clauses are supported from Oracle 12c onwards.
98	* Invoke this method when using previous versions of Oracle, to simulate these clauses with subqueries.
99	*/
100	public OracleDialect withLegacyRowLimiting() {
101	EnumSet<Capability> reducedCaps = EnumSet.copyOf(supportedCaps);	4✔
102	reducedCaps.remove(LIMIT_OFFSET);	4✔
103	return new OracleDialect(reducedCaps);	5✔
104	}
105	}

torand / FasterSQL / 13367709795

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