2136

Committed 02 Apr 2026 07:17PM UTC coverage: 91.775% (+1.4%) from 90.382%

Build # 2136

Build Type

Pull #1485

github

Committed by

web-flow

Commit Message

Merge 516685a9a into 18f1f002d

Pull Request Pull Request #1485: Code Cleanup and Coverage

Coverage Stats

2425 of 3124 branches covered (77.62%)

191 of 235 new or added lines in 54 files covered. (81.28%)

7 existing lines in 4 files now uncovered.

11884 of 12949 relevant lines covered (91.78%)

0.92 hits per line

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81.08

/core/mybatis-generator-core/src/main/java/org/mybatis/generator/internal/util/StringUtility.java

/*
 *    Copyright 2006-2026 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.generator.internal.util;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.function.UnaryOperator;

import org.jspecify.annotations.Nullable;

public class StringUtility {

    /**
     * Utility class. No instances allowed
     */
    private StringUtility() {
        super();
    }

    public static @Nullable String trimToNull(@Nullable String s) {
        if (s == null) {
            return null;
        } else {
            var d = s.trim();
            return d.isEmpty() ? null : d;
        }
    }

    public static @Nullable Boolean parseNullableBoolean(@Nullable String s) {
        return s == null ? null : Boolean.valueOf(s);
    }

    public static boolean stringHasValue(@Nullable String s) {
        return s != null && !s.isEmpty();
    }

    public static String stringValueOrElse(@Nullable String s, String defaultValue) {
        if (stringHasValue(s)) {
            return s;
        } else {
            return defaultValue;
        }
    }

    public static <T extends Throwable> String stringValueOrElseThrow(@Nullable String s,
                                                                      Supplier<T> exceptionSupplier) throws T {
        if (stringHasValue(s)) {
            return s;
        } else {
            throw exceptionSupplier.get();
        }
    }

    public static String stringValueOrElseGet(@Nullable String s, Supplier<String> supplier) {
        return mapStringValueOrElseGet(s, UnaryOperator.identity(), supplier);
    }

    public static <T> T mapStringValueOrElseGet(@Nullable String s, Function<String, T> mapper,
                                                Supplier<T> supplier) {
        if (stringHasValue(s)) {
            return mapper.apply(s);
        } else {
            return supplier.get();
        }
    }

    public static String mapStringValueOrElse(@Nullable String s, UnaryOperator<String> mapper, String defaultValue) {
        if (stringHasValue(s)) {
            return mapper.apply(s);
        } else {
            return defaultValue;
        }
    }

    public static void ifStringHasValueElse(@Nullable String s, Consumer<String> consumer,
                                            Runnable runnable) {
        if (stringHasValue(s)) {
            consumer.accept(s);
        } else {
            runnable.run();
        }
    }

    public static String composeFullyQualifiedTableName(@Nullable String catalog,
            @Nullable String schema, String tableName, char separator) {
        StringBuilder sb = new StringBuilder();

        if (stringHasValue(catalog)) {
            sb.append(catalog);
            sb.append(separator);
        }

        if (stringHasValue(schema)) {
            sb.append(schema);
            sb.append(separator);
        } else {
            if (!sb.isEmpty()) {
                sb.append(separator);
            }
        }

        sb.append(tableName);

        return sb.toString();
    }

    public static boolean stringContainsSpace(@Nullable String s) {
        return s != null && s.indexOf(' ') != -1;
    }

    public static String escapeStringForJava(String s) {
        StringTokenizer st = new StringTokenizer(s, "\"", true); //$NON-NLS-1$
        StringBuilder sb = new StringBuilder();
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            if ("\"".equals(token)) { //$NON-NLS-1$
                sb.append("\\\""); //$NON-NLS-1$
            } else {
                sb.append(token);
            }
        }

        return sb.toString();
    }

    public static String escapeStringForKotlin(String s) {
        StringTokenizer st = new StringTokenizer(s, "\"$", true); //$NON-NLS-1$
        StringBuilder sb = new StringBuilder();
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            if ("\"".equals(token)) { //$NON-NLS-1$
                sb.append("\\\""); //$NON-NLS-1$
            } else if ("$".equals(token)) { //$NON-NLS-1$
                sb.append("\\$"); //$NON-NLS-1$
            } else {
                sb.append(token);
            }
        }

        return sb.toString();
    }

    public static boolean isTrue(@Nullable String s) {
        return Boolean.parseBoolean(s);
    }

    public static boolean stringContainsSQLWildcard(@Nullable String s) {
        if (s == null) {
            return false;
        }

        return s.indexOf('%') != -1 || s.indexOf('_') != -1;
    }

    /**
     * Given an input string, tokenize on the commas and trim all tokens. Returns an empty set if the input string is
     * null.
     *
     * @param in string to tokenize.
     *
     * @return Set of tokens
     */
    public static Set<String> tokenize(@Nullable String in) {
        return mapStringValueOrElseGet(in, str -> {
            Set<String> answer = new HashSet<>();
            StringTokenizer st = new StringTokenizer(str, ","); //$NON-NLS-1$
            while (st.hasMoreTokens()) {
                String s = st.nextToken().trim();
                if (!s.isEmpty()) {
                    answer.add(s);
                }
            }
            return answer;
        }, Collections::emptySet);
    }

    public static String convertCamelCaseToSnakeCase(String in) {
        if (in.chars().anyMatch(Character::isLowerCase)) {
            return in
                    .replaceAll("([A-Z])(?=[A-Z])", "$1_") //$NON-NLS-1$ //$NON-NLS-2$
                    .replaceAll("([a-z])([A-Z])", "$1_$2") //$NON-NLS-1$ //$NON-NLS-2$
                    .toUpperCase();
        } else {
            // if all upper case, then return the string as is
            return in;
        }
    }
}

1	/*
2	* Copyright 2006-2026 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.generator.internal.util;
17
18	import java.util.Collections;
19	import java.util.HashSet;
20	import java.util.Set;
21	import java.util.StringTokenizer;
22	import java.util.function.Consumer;
23	import java.util.function.Function;
24	import java.util.function.Supplier;
25	import java.util.function.UnaryOperator;
26
27	import org.jspecify.annotations.Nullable;
28
29	public class StringUtility {
30
31	/**
32	* Utility class. No instances allowed
33	*/
34	private StringUtility() {
35	super();
36	}
37
38	public static @Nullable String trimToNull(@Nullable String s) {
39	if (s == null) {	1!
40	return null;	×
41	} else {
42	var d = s.trim();	1✔
43	return d.isEmpty() ? null : d;	1✔
44	}
45	}
46
47	public static @Nullable Boolean parseNullableBoolean(@Nullable String s) {
48	return s == null ? null : Boolean.valueOf(s);	1✔
49	}
50
51	public static boolean stringHasValue(@Nullable String s) {
52	return s != null && !s.isEmpty();	1✔
53	}
54
55	public static String stringValueOrElse(@Nullable String s, String defaultValue) {
56	if (stringHasValue(s)) {	1✔
57	return s;	1✔
58	} else {
59	return defaultValue;	1✔
60	}
61	}
62
63	public static <T extends Throwable> String stringValueOrElseThrow(@Nullable String s,
64	Supplier<T> exceptionSupplier) throws T {
65	if (stringHasValue(s)) {	1!
66	return s;	1✔
67	} else {
NEW 68	throw exceptionSupplier.get();	×
69	}
70	}
71
72	public static String stringValueOrElseGet(@Nullable String s, Supplier<String> supplier) {
73	return mapStringValueOrElseGet(s, UnaryOperator.identity(), supplier);	1✔
74	}
75
76	public static <T> T mapStringValueOrElseGet(@Nullable String s, Function<String, T> mapper,
77	Supplier<T> supplier) {
78	if (stringHasValue(s)) {	1✔
79	return mapper.apply(s);	1✔
80	} else {
81	return supplier.get();	1✔
82	}
83	}
84
85	public static String mapStringValueOrElse(@Nullable String s, UnaryOperator<String> mapper, String defaultValue) {
86	if (stringHasValue(s)) {	1!
87	return mapper.apply(s);	1✔
88	} else {
NEW 89	return defaultValue;	×
90	}
91	}
92
93	public static void ifStringHasValueElse(@Nullable String s, Consumer<String> consumer,
94	Runnable runnable) {
95	if (stringHasValue(s)) {	1✔
96	consumer.accept(s);	1✔
97	} else {
98	runnable.run();	1✔
99	}
100	}	1✔
101
102	public static String composeFullyQualifiedTableName(@Nullable String catalog,
103	@Nullable String schema, String tableName, char separator) {
104	StringBuilder sb = new StringBuilder();	1✔
105
106	if (stringHasValue(catalog)) {	1✔
107	sb.append(catalog);	1✔
108	sb.append(separator);	1✔
109	}
110
111	if (stringHasValue(schema)) {	1✔
112	sb.append(schema);	1✔
113	sb.append(separator);	1✔
114	} else {
115	if (!sb.isEmpty()) {	1✔
116	sb.append(separator);	1✔
117	}
118	}
119
120	sb.append(tableName);	1✔
121
122	return sb.toString();	1✔
123	}
124
125	public static boolean stringContainsSpace(@Nullable String s) {
126	return s != null && s.indexOf(' ') != -1;	1✔
127	}
128
129	public static String escapeStringForJava(String s) {
130	StringTokenizer st = new StringTokenizer(s, "\"", true); //$NON-NLS-1$	1✔
131	StringBuilder sb = new StringBuilder();	1✔
132	while (st.hasMoreTokens()) {	1✔
133	String token = st.nextToken();	1✔
134	if ("\"".equals(token)) { //$NON-NLS-1$	1✔
135	sb.append("\\\""); //$NON-NLS-1$	1✔
136	} else {
137	sb.append(token);	1✔
138	}
139	}	1✔
140
141	return sb.toString();	1✔
142	}
143
144	public static String escapeStringForKotlin(String s) {
145	StringTokenizer st = new StringTokenizer(s, "\"$", true); //$NON-NLS-1$	1✔
146	StringBuilder sb = new StringBuilder();	1✔
147	while (st.hasMoreTokens()) {	1✔
148	String token = st.nextToken();	1✔
149	if ("\"".equals(token)) { //$NON-NLS-1$	1✔
150	sb.append("\\\""); //$NON-NLS-1$	1✔
151	} else if ("$".equals(token)) { //$NON-NLS-1$	1✔
152	sb.append("\\$"); //$NON-NLS-1$	1✔
153	} else {
154	sb.append(token);	1✔
155	}
156	}	1✔
157
158	return sb.toString();	1✔
159	}
160
161	public static boolean isTrue(@Nullable String s) {
162	return Boolean.parseBoolean(s);	1✔
163	}
164
165	public static boolean stringContainsSQLWildcard(@Nullable String s) {
166	if (s == null) {	×
167	return false;	×
168	}
169
170	return s.indexOf('%') != -1 \|\| s.indexOf('_') != -1;	×
171	}
172
173	/**
174	* Given an input string, tokenize on the commas and trim all tokens. Returns an empty set if the input string is
175	* null.
176	*
177	* @param in string to tokenize.
178	*
179	* @return Set of tokens
180	*/
181	public static Set<String> tokenize(@Nullable String in) {
182	return mapStringValueOrElseGet(in, str -> {	1✔
NEW 183	Set<String> answer = new HashSet<>();	×
NEW 184	StringTokenizer st = new StringTokenizer(str, ","); //$NON-NLS-1$	×
185	while (st.hasMoreTokens()) {	×
186	String s = st.nextToken().trim();	×
187	if (!s.isEmpty()) {	×
188	answer.add(s);	×
189	}
190	}	×
NEW 191	return answer;	×
192	}, Collections::emptySet);
193	}
194
195	public static String convertCamelCaseToSnakeCase(String in) {
196	if (in.chars().anyMatch(Character::isLowerCase)) {	1✔
197	return in	1✔
198	.replaceAll("([A-Z])(?=[A-Z])", "$1_") //$NON-NLS-1$ //$NON-NLS-2$	1✔
199	.replaceAll("([a-z])([A-Z])", "$1_$2") //$NON-NLS-1$ //$NON-NLS-2$	1✔
200	.toUpperCase();	1✔
201	} else {
202	// if all upper case, then return the string as is
203	return in;	1✔
204	}
205	}
206	}

mybatis / generator / 2136

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