composite-build-usage-example

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package by.andd3dfx.templateapp.validators;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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@Target({ElementType.TYPE})
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@Retention(RetentionPolicy.RUNTIME)
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@Constraint(validatedBy = OnlyOneFieldModifiedValidator.class)
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public @interface OnlyOneFieldModified {
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    String message() default "{Only one field should be modified at once}";
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    Class<?>[] groups() default {};
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    Class<? extends Payload>[] payload() default {};
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    String[] fields() default {};
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}
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