13367709795

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

Build # 13367709795

Build Type

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%)

3.33 hits per line

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0.0

/src/main/java/io/github/torand/fastersql/dialect/H2Dialect.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.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
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 H2Dialect implements Dialect {
    private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR);

    @Override
    public String getProductName() {
        return "H2";
    }

    @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.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 "substring(" + operand + ", " + startPos + ", " + length + ")";
    }

    @Override
    public String formatConcatFunction(List<String> operands) {
        throw new UnsupportedOperationException("Use the concat infix operator for H2");
    }

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

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

    public static void setupCustomizations(Connection connection) {
        try (PreparedStatement preparedStatement = connection.prepareStatement("CREATE ALIAS IF NOT EXISTS TO_NUMBER FOR \"io.github.torand.fastersql.dialect.H2CustomFunctions.toNumber\"")) {
            preparedStatement.execute();
        } catch (SQLException e) {
            throw new RuntimeException("Failed to setup H2 customizations", e);
        }
    }
}

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.sql.Connection;
19	import java.sql.PreparedStatement;
20	import java.sql.SQLException;
21	import java.util.EnumSet;
22	import java.util.List;
23	import java.util.Optional;
24
25	import static io.github.torand.fastersql.dialect.Capability.CONCAT_OPERATOR;
26	import static io.github.torand.fastersql.dialect.Capability.LIMIT_OFFSET;
27	import static io.github.torand.fastersql.util.lang.StringHelper.generate;
28
UNCOV 29	public class H2Dialect implements Dialect {	×
UNCOV 30	private static final EnumSet<Capability> SUPPORTED_CAPS = EnumSet.of(LIMIT_OFFSET, CONCAT_OPERATOR);	×
31
32	@Override
33	public String getProductName() {
UNCOV 34	return "H2";	×
35	}
36
37	@Override
38	public Optional<String> formatRowOffsetClause() {
UNCOV 39	return Optional.of("offset ?");	×
40	}
41
42	@Override
43	public Optional<String> formatRowLimitClause() {
UNCOV 44	return Optional.of("limit ?");	×
45	}
46
47	@Override
48	public Optional<String> formatRowNumLiteral() {
UNCOV 49	return Optional.of("rownum()");	×
50	}
51
52	@Override
53	public String formatToNumberFunction(String operand, int precision, int scale) {
54	StringBuilder mask = new StringBuilder();	×
UNCOV 55	if (precision-scale > 0) {	×
56	mask.append(generate("9", precision-scale));	×
57	}
UNCOV 58	if (scale > 0) {	×
UNCOV 59	mask.append(".").append(generate("9", scale));	×
60	}
61
UNCOV 62	return "to_number(" + operand + ", '" + mask + "')";	×
63	}
64
65	@Override
66	public String formatSubstringFunction(String operand, int startPos, int length) {
UNCOV 67	return "substring(" + operand + ", " + startPos + ", " + length + ")";	×
68	}
69
70	@Override
71	public String formatConcatFunction(List<String> operands) {
UNCOV 72	throw new UnsupportedOperationException("Use the concat infix operator for H2");	×
73	}
74
75	@Override
76	public String formatLengthFunction(String operand) {
NEW 77	return "char_length(" + operand + ")";	×
78	}
79
80	@Override
81	public boolean supports(Capability capability) {
82	return SUPPORTED_CAPS.contains(capability);	×
83	}
84
85	public static void setupCustomizations(Connection connection) {
UNCOV 86	try (PreparedStatement preparedStatement = connection.prepareStatement("CREATE ALIAS IF NOT EXISTS TO_NUMBER FOR \"io.github.torand.fastersql.dialect.H2CustomFunctions.toNumber\"")) {	×
UNCOV 87	preparedStatement.execute();	×
UNCOV 88	} catch (SQLException e) {	×
UNCOV 89	throw new RuntimeException("Failed to setup H2 customizations", e);	×
UNCOV 90	}	×
UNCOV 91	}	×
92	}

torand / FasterSQL / 13367709795

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