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Constraints.java

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// annotations/database/Constraints.java

// (c)2016 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

package annotations.database;

import java.lang.annotation.*;

@Target(ElementType.FIELD)

@Retention(RetentionPolicy.RUNTIME)

public @interface Constraints {

boolean primaryKey() default false;

boolean allowNull() default true;

boolean unique() default false;

}