1488

Committed 07 Mar 2025 04:31PM CUT coverage: 100.0%. Remained the same

Build # 1488

Build Type

Pull #918

github

Committed by

web-flow

Commit Message

Merge 10fe79dbe into eeedb4038

Pull Request Pull Request #918: Add a Kotlin example of a custom condition

Run Details

200 of 200 branches covered (100.0%)

Branch coverage included in aggregate %.

4993 of 4993 relevant lines covered (100.0%)

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/src/main/java/org/mybatis/dynamic/sql/AbstractListValueCondition.java

/*
 *    Copyright 2016-2025 the original author or authors.
 *
 *    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
 *
 *       https://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 org.mybatis.dynamic.sql;

import java.util.Collection;
import java.util.Objects;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.mybatis.dynamic.sql.render.RenderedParameterInfo;
import org.mybatis.dynamic.sql.render.RenderingContext;
import org.mybatis.dynamic.sql.util.FragmentAndParameters;
import org.mybatis.dynamic.sql.util.FragmentCollector;

public abstract class AbstractListValueCondition<T> implements RenderableCondition<T> {
    protected final Collection<T> values;

    protected AbstractListValueCondition(Collection<T> values) {
        this.values = Objects.requireNonNull(values);
    }

    public final Stream<T> values() {
        return values.stream();
    }

    @Override
    public boolean isEmpty() {
        return values.isEmpty();
    }

    private <R> Collection<R> applyMapper(Function<? super T, ? extends R> mapper) {
        Objects.requireNonNull(mapper);
        return values().map(mapper).collect(Collectors.toList());
    }

    private Collection<T> applyFilter(Predicate<? super T> predicate) {
        Objects.requireNonNull(predicate);
        return values().filter(predicate).toList();
    }

    protected <S extends AbstractListValueCondition<T>> S filterSupport(Predicate<? super T> predicate,
            Function<Collection<T>, S> constructor, S self, Supplier<S> emptySupplier) {
        if (isEmpty()) {
            return self;
        } else {
            Collection<T> filtered = applyFilter(predicate);
            return filtered.isEmpty() ? emptySupplier.get() : constructor.apply(filtered);
        }
    }

    protected <R, S extends AbstractListValueCondition<R>> S mapSupport(Function<? super T, ? extends R> mapper,
            Function<Collection<R>, S> constructor, Supplier<S> emptySupplier) {
        if (isEmpty()) {
            return emptySupplier.get();
        } else {
            return constructor.apply(applyMapper(mapper));
        }
    }

    /**
     * If not empty, apply the predicate to each value in the list and return a new condition with the filtered values.
     *     Else returns an empty condition (this).
     *
     * @param predicate predicate applied to the values, if not empty
     *
     * @return a new condition with filtered values if renderable, otherwise an empty condition
     */
    public abstract AbstractListValueCondition<T> filter(Predicate<? super T> predicate);

    public abstract String operator();

    @Override
    public FragmentAndParameters renderCondition(RenderingContext renderingContext, BindableColumn<T> leftColumn) {
        return values().map(v -> toFragmentAndParameters(v, renderingContext, leftColumn))
                .collect(FragmentCollector.collect())
                .toFragmentAndParameters(Collectors.joining(",", //$NON-NLS-1$
                        operator() + " (", ")")); //$NON-NLS-1$ //$NON-NLS-2$
    }

    private FragmentAndParameters toFragmentAndParameters(T value, RenderingContext renderingContext,
                                                          BindableColumn<T> leftColumn) {
        RenderedParameterInfo parameterInfo = renderingContext.calculateParameterInfo(leftColumn);
        return FragmentAndParameters.withFragment(parameterInfo.renderedPlaceHolder())
                .withParameter(parameterInfo.parameterMapKey(), leftColumn.convertParameterType(value))
                .build();
    }
}

1	/*
2	* Copyright 2016-2025 the original author or authors.
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	* https://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 org.mybatis.dynamic.sql;
17
18	import java.util.Collection;
19	import java.util.Objects;
20	import java.util.function.Function;
21	import java.util.function.Predicate;
22	import java.util.function.Supplier;
23	import java.util.stream.Collectors;
24	import java.util.stream.Stream;
25
26	import org.mybatis.dynamic.sql.render.RenderedParameterInfo;
27	import org.mybatis.dynamic.sql.render.RenderingContext;
28	import org.mybatis.dynamic.sql.util.FragmentAndParameters;
29	import org.mybatis.dynamic.sql.util.FragmentCollector;
30
31	public abstract class AbstractListValueCondition<T> implements RenderableCondition<T> {
32	protected final Collection<T> values;
33
34	protected AbstractListValueCondition(Collection<T> values) {	1✔
35	this.values = Objects.requireNonNull(values);	1✔
36	}	1✔
37
38	public final Stream<T> values() {
39	return values.stream();	1✔
40	}
41
42	@Override
43	public boolean isEmpty() {
44	return values.isEmpty();	1✔
45	}
46
47	private <R> Collection<R> applyMapper(Function<? super T, ? extends R> mapper) {
48	Objects.requireNonNull(mapper);	1✔
49	return values().map(mapper).collect(Collectors.toList());	1✔
50	}
51
52	private Collection<T> applyFilter(Predicate<? super T> predicate) {
53	Objects.requireNonNull(predicate);	1✔
54	return values().filter(predicate).toList();	1✔
55	}
56
57	protected <S extends AbstractListValueCondition<T>> S filterSupport(Predicate<? super T> predicate,
58	Function<Collection<T>, S> constructor, S self, Supplier<S> emptySupplier) {
59	if (isEmpty()) {	1✔
60	return self;	1✔
61	} else {
62	Collection<T> filtered = applyFilter(predicate);	1✔
63	return filtered.isEmpty() ? emptySupplier.get() : constructor.apply(filtered);	1✔
64	}
65	}
66
67	protected <R, S extends AbstractListValueCondition<R>> S mapSupport(Function<? super T, ? extends R> mapper,
68	Function<Collection<R>, S> constructor, Supplier<S> emptySupplier) {
69	if (isEmpty()) {	1✔
70	return emptySupplier.get();	1✔
71	} else {
72	return constructor.apply(applyMapper(mapper));	1✔
73	}
74	}
75
76	/**
77	* If not empty, apply the predicate to each value in the list and return a new condition with the filtered values.
78	* Else returns an empty condition (this).
79	*
80	* @param predicate predicate applied to the values, if not empty
81	*
82	* @return a new condition with filtered values if renderable, otherwise an empty condition
83	*/
84	public abstract AbstractListValueCondition<T> filter(Predicate<? super T> predicate);
85
86	public abstract String operator();
87
88	@Override
89	public FragmentAndParameters renderCondition(RenderingContext renderingContext, BindableColumn<T> leftColumn) {
90	return values().map(v -> toFragmentAndParameters(v, renderingContext, leftColumn))	1✔
91	.collect(FragmentCollector.collect())	1✔
92	.toFragmentAndParameters(Collectors.joining(",", //$NON-NLS-1$	1✔
93	operator() + " (", ")")); //$NON-NLS-1$ //$NON-NLS-2$	1✔
94	}
95
96	private FragmentAndParameters toFragmentAndParameters(T value, RenderingContext renderingContext,
97	BindableColumn<T> leftColumn) {
98	RenderedParameterInfo parameterInfo = renderingContext.calculateParameterInfo(leftColumn);	1✔
99	return FragmentAndParameters.withFragment(parameterInfo.renderedPlaceHolder())	1✔
100	.withParameter(parameterInfo.parameterMapKey(), leftColumn.convertParameterType(value))	1✔
101	.build();	1✔
102	}
103	}

mybatis / mybatis-dynamic-sql / 1488

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