Custom Validator for Hibernate only runs on persist
Hi together,
first I want to introduce myself. I am Steffen Persch from Germany, I'm 22years old and I have been java coder for now 2,5 years and seam coder for 1year.
I was searching for a solution for my problem but I did not find anyone. I have written a custom Validator for Hibernate (code below) and it works, but only when I called my entityManager with a persist. What have I to do now that it will work with <s:validateAll> ?
Sry for my non perfect English, I hope you understand me.
Here my classes:
package de.dssc.validator;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;
import org.hibernate.validator.ValidatorClass;
@ValidatorClass(DSSCImageValidator.class)
@Target({FIELD, METHOD})
@Retention(RUNTIME)
@Documented
public @interface ImageValidator {
/** @return error message key */
String message() default "{validator.imageValidator}";
}package de.dssc.validator;
import java.util.*;
import org.hibernate.validator.*;
public class DSSCImageValidator implements
Validator<ImageValidator> {
private static final Set<byte[]> VALID_HEX_BYTES = new HashSet<byte[]>();
static {
byte[] jpeg = {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xE0};
VALID_HEX_BYTES.add(jpeg);
byte[] jpegExif = {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xE1};
VALID_HEX_BYTES.add(jpegExif);
byte[] jpegQM = {(byte) 0x4A, (byte) 0x46, (byte) 0x49, (byte) 0x46};
VALID_HEX_BYTES.add(jpegQM);
}
public boolean isAllowedType(byte[] firstBytes) {
for (byte[] byteArr : VALID_HEX_BYTES) {
if (Arrays.equals(byteArr, firstBytes)) {
return true;
}
}
return false;
}
public void initialize(ImageValidator arg0) {
// TODO Auto-generated method stub
}
public boolean isValid(Object obj) {
System.out.println("DSSC IMAGE VALIDATOR: Validator called!");
final byte[] imageData = (byte[]) obj;
final byte[] firstBytes = Arrays.copyOfRange(imageData, 0, 4);
if(!isAllowedType(firstBytes)) {
return false;
}
return true;
}
}And my field in the entity:
@Lob @Basic(fetch=FetchType.LAZY) @Column(columnDefinition = "MEDIUMBLOB") @ImageValidator(message = "pic error message") private byte[] picture;
Best regards
Steffen
