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114 changes: 114 additions & 0 deletions
114
...gfw-validator/src/main/java/org/terasoluna/gfw/common/validator/constraints/ByteSize.java
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| /* | ||
| * Copyright (C) 2013-2017 NTT DATA Corporation | ||
| * | ||
| * 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 org.terasoluna.gfw.common.validator.constraints; | ||
|
|
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| import static java.lang.annotation.ElementType.ANNOTATION_TYPE; | ||
| import static java.lang.annotation.ElementType.CONSTRUCTOR; | ||
| import static java.lang.annotation.ElementType.FIELD; | ||
| import static java.lang.annotation.ElementType.METHOD; | ||
| import static java.lang.annotation.ElementType.PARAMETER; | ||
| import static java.lang.annotation.RetentionPolicy.RUNTIME; | ||
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| import java.lang.annotation.Documented; | ||
| import java.lang.annotation.Retention; | ||
| import java.lang.annotation.Target; | ||
|
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| import javax.validation.Constraint; | ||
| import javax.validation.Payload; | ||
| import javax.validation.ValidationException; | ||
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| import org.terasoluna.gfw.common.validator.constraintvalidators.ByteSizeValidator; | ||
|
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| /** | ||
| * The annotated element must be a {@link CharSequence}({@link String}, {@link StringBuilder}, etc ...) whose byte length must | ||
| * be between the specified minimum and maximum. | ||
| * <p> | ||
| * This is an annotation combining the functions {@link ByteMin} and {@link ByteMax}. Compared to using two annotations, | ||
| * the advantage is that overhead can be reduced by getting byte length at a time. | ||
| * </p> | ||
| * <p> | ||
| * Supported types are: | ||
| * </p> | ||
| * <ul> | ||
| * <li>{@code CharSequence}</li> | ||
| * </ul> | ||
| * <p> | ||
| * {@code null} elements are considered valid. Determine the byte length By encoding the string in the specified | ||
| * {@link ByteSize#charset()}. If not specify, encode with charset {@code "UTF-8"}. | ||
| * An {@link IllegalArgumentException}(wrapped in {@link ValidationException}) is thrown if specify | ||
| * {@link ByteSize#charset()} that can not be used or specify {@link ByteSize#min()} or {@link ByteSize#max()} | ||
| * that is negative or specify {@link ByteSize#max()} that lower than {@link ByteSize#min()} value. | ||
| * </p> | ||
| * @since 5.4.2 | ||
| * @see ByteSizeValidator | ||
| * @see ByteMin | ||
| * @see ByteMax | ||
| */ | ||
| @Documented | ||
| @Constraint(validatedBy = { ByteSizeValidator.class }) | ||
| @Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER }) | ||
| @Retention(RUNTIME) | ||
| public @interface ByteSize { | ||
|
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| /** | ||
| * Error message or message key | ||
| * @return error message or message key | ||
| */ | ||
| String message() default "{org.terasoluna.gfw.common.validator.constraints.ByteSize.message}"; | ||
|
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| /** | ||
| * Constraint groups | ||
| * @return constraint groups | ||
| */ | ||
| Class<?>[] groups() default {}; | ||
|
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| /** | ||
| * Payload | ||
| * @return payload | ||
| */ | ||
| Class<? extends Payload>[] payload() default {}; | ||
|
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| /** | ||
| * @return value the element's byte length must be higher or equal to | ||
| */ | ||
| long min() default 0; | ||
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| /** | ||
| * @return value the element's byte length must be lower or equal to | ||
| */ | ||
| long max() default Long.MAX_VALUE; | ||
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| /** | ||
| * @return the charset name used in parse to a string | ||
| */ | ||
| String charset() default "UTF-8"; | ||
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| /** | ||
| * Defines several {@link ByteSize} annotations on the same element. | ||
| * @see ByteSize | ||
| * @since 5.4.2 | ||
| */ | ||
| @Documented | ||
| @Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER }) | ||
| @Retention(RUNTIME) | ||
| @interface List { | ||
| /** | ||
| * <code>@ByteSize</code> annotations | ||
| * @return annotations | ||
| */ | ||
| ByteSize[] value(); | ||
| } | ||
| } |
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101 changes: 101 additions & 0 deletions
101
...main/java/org/terasoluna/gfw/common/validator/constraintvalidators/ByteSizeValidator.java
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| @@ -0,0 +1,101 @@ | ||
| /* | ||
| * Copyright (C) 2013-2017 NTT DATA Corporation | ||
| * | ||
| * 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 org.terasoluna.gfw.common.validator.constraintvalidators; | ||
|
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| import static org.terasoluna.gfw.common.validator.constraintvalidators.ConstraintValidatorsUtils.reportFailedToInitialize; | ||
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| import java.nio.charset.Charset; | ||
|
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| import javax.validation.ConstraintValidator; | ||
| import javax.validation.ConstraintValidatorContext; | ||
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| import org.terasoluna.gfw.common.validator.constraints.ByteSize; | ||
|
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| /** | ||
| * Constraint validator class of {@link ByteSize} annotation. | ||
| * <p> | ||
| * Validate the {@link CharSequence}({@link String}, {@link StringBuilder}, etc ...) whose byte length must be between the | ||
| * specified minimum and maximum. Determine the byte length By encoding the string in the specified charset. | ||
| * </p> | ||
| * @since 5.4.0 | ||
| * @see ConstraintValidator | ||
| * @see ByteSize | ||
| */ | ||
| public class ByteSizeValidator implements | ||
| ConstraintValidator<ByteSize, CharSequence> { | ||
|
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| /** | ||
| * The charset used in parse to a string. | ||
| */ | ||
| private Charset charset; | ||
|
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| /** | ||
| * Byte length must be higher or equal to. | ||
| */ | ||
| private long min; | ||
|
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| /** | ||
| * Byte length must be lower or equal to. | ||
| */ | ||
| private long max; | ||
|
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| /** | ||
| * Initialize validator. | ||
| * @param constraintAnnotation annotation instance for a given constraint declaration | ||
| * @throws IllegalArgumentException failed to get a charset by name, or min and max are invalid. | ||
| * @see javax.validation.ConstraintValidator#initialize(java.lang.annotation.Annotation) | ||
| */ | ||
| @Override | ||
| public void initialize(ByteSize constraintAnnotation) { | ||
| try { | ||
| charset = Charset.forName(constraintAnnotation.charset()); | ||
| } catch (IllegalArgumentException e) { | ||
| throw reportFailedToInitialize(e); | ||
| } | ||
| min = constraintAnnotation.min(); | ||
| max = constraintAnnotation.max(); | ||
| if (min < 0) { | ||
| throw reportFailedToInitialize(new IllegalArgumentException("min[" | ||
| + min + "] must not be negative value.")); | ||
| } | ||
| if (max < 0) { | ||
| throw reportFailedToInitialize(new IllegalArgumentException("max[" | ||
| + max + "] must not be negative value.")); | ||
| } | ||
| if (max < min) { | ||
| throw reportFailedToInitialize(new IllegalArgumentException("max[" | ||
| + max + "] must be higher or equal to min[" + min + "].")); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Validate execute. | ||
| * @param value object to validate | ||
| * @param context context in which the constraint is evaluated | ||
| * @return {@code true} if {@code value} length is between the specified minimum and maximum, or null. otherwise {@code false}. | ||
| * @see javax.validation.ConstraintValidator#isValid(java.lang.Object, javax.validation.ConstraintValidatorContext) | ||
| */ | ||
| @Override | ||
| public boolean isValid(CharSequence value, | ||
| ConstraintValidatorContext context) { | ||
| if (value == null) { | ||
| return true; | ||
| } | ||
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| long byteLength = value.toString().getBytes(charset).length; | ||
| return min <= byteLength && byteLength <= max; | ||
| } | ||
| } |
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