org.springframework.ldap.odm.annotations.Entry Java Examples

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Example #1
Source File: ObjectMetaData.java    From spring-ldap with Apache License 2.0 4 votes vote down vote up 
public ObjectMetaData(Class<?> clazz) {
    if (LOG.isDebugEnabled()) {
        LOG.debug(String.format("Extracting metadata from %1$s", clazz));
    }
    
    // Get object class metadata - the @Entity annotation
    Entry entity = clazz.getAnnotation(Entry.class);
    if (entity != null) {
        // Default objectclass name to the class name unless it's specified
        // in @Entity(name={objectclass1, objectclass2});
        String[] localObjectClasses = entity.objectClasses();
        if (localObjectClasses != null && localObjectClasses.length > 0 && localObjectClasses[0].length() > 0) {
            for (String localObjectClass:localObjectClasses) {
                objectClasses.add(new CaseIgnoreString(localObjectClass));
            }
        } else {
            objectClasses.add(new CaseIgnoreString(clazz.getSimpleName()));
        }

        String base = entity.base();
        if(StringUtils.hasText(base)) {
            this.base = LdapUtils.newLdapName(base);
        }
    } else {
        throw new MetaDataException(String.format("Class %1$s must have a class level %2$s annotation", clazz,
                Entry.class));
    }

    // Check the class is final
    if (!Modifier.isFinal(clazz.getModifiers())) {
        LOG.warn(String.format("The Entry class %1$s should be declared final", clazz.getSimpleName()));
    }

    // Get field meta-data - the @Attribute annotation
    Field[] fields = clazz.getDeclaredFields();
    for (Field field : fields) {
        // So we can write to private fields
        field.setAccessible(true);

        // Skip synthetic or static fields
        if (Modifier.isStatic(field.getModifiers()) || field.isSynthetic()) {
            continue;
        }

        AttributeMetaData currentAttributeMetaData=new AttributeMetaData(field);
        if (currentAttributeMetaData.isId()) {
            if (idAttribute!=null) {
                // There can be only one id field
                throw new MetaDataException(
                      String.format("You man have only one field with the %1$s annotation in class %2$s", Id.class, clazz));
            }
            idAttribute=currentAttributeMetaData;
        }
        fieldToAttribute.put(field, currentAttributeMetaData);

        if(currentAttributeMetaData.isDnAttribute()) {
            dnAttributes.add(currentAttributeMetaData);
        }
    }

    if (idAttribute == null) {
        throw new MetaDataException(
                String.format("All Entry classes must define a field with the %1$s annotation, error in class %2$s", Id.class,
                              clazz));
    }

    postProcessDnAttributes(clazz);

    if (LOG.isDebugEnabled()) {
        LOG.debug(String.format("Extracted metadata from %1$s as %2$s", clazz, this));
    }
}