Example usage for org.apache.commons.collections SequencedHashMap values

Introduction

In this page you can find the example usage for org.apache.commons.collections SequencedHashMap values.

Prototype

public Collection values() 

Source Link

Document

Implements Map#values() .

Usage

From source file:xdoclet.modules.ojb.constraints.ModelConstraints.java

/**
 * Ensures that the foreign keys required by the given collection are present in the element class.
 * //from  w w  w.j  a  v a2 s . c o m
 * @param modelDef The model
 * @param collDef  The collection
 * @throws ConstraintException If there is a problem with the foreign keys
 */
private void ensureReferencedFKs(ModelDef modelDef, CollectionDescriptorDef collDef)
        throws ConstraintException {
    String elementClassName = collDef.getProperty(PropertyHelper.OJB_PROPERTY_ELEMENT_CLASS_REF);
    ClassDescriptorDef elementClassDef = modelDef.getClass(elementClassName);
    String fkFieldNames = collDef.getProperty(PropertyHelper.OJB_PROPERTY_FOREIGNKEY);
    ArrayList missingFields = new ArrayList();
    SequencedHashMap fkFields = new SequencedHashMap();

    // first we gather all field names
    for (CommaListIterator it = new CommaListIterator(fkFieldNames); it.hasNext();) {
        String fieldName = (String) it.next();
        FieldDescriptorDef fieldDef = elementClassDef.getField(fieldName);

        if (fieldDef == null) {
            missingFields.add(fieldName);
        }
        fkFields.put(fieldName, fieldDef);
    }

    // next we traverse all sub types and gather fields as we go
    for (Iterator it = elementClassDef.getAllExtentClasses(); it.hasNext() && !missingFields.isEmpty();) {
        ClassDescriptorDef subTypeDef = (ClassDescriptorDef) it.next();

        for (int idx = 0; idx < missingFields.size();) {
            FieldDescriptorDef fieldDef = subTypeDef.getField((String) missingFields.get(idx));

            if (fieldDef != null) {
                fkFields.put(fieldDef.getName(), fieldDef);
                missingFields.remove(idx);
            } else {
                idx++;
            }
        }
    }
    if (!missingFields.isEmpty()) {
        throw new ConstraintException(
                "Cannot find field " + missingFields.get(0).toString() + " in the hierarchy with root type "
                        + elementClassDef.getName() + " which is used as foreignkey in collection "
                        + collDef.getName() + " in " + collDef.getOwner().getName());
    }

    // copy the found fields into the element class
    ensureFields(elementClassDef, fkFields.values());
}

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From source file:xdoclet.modules.ojb.constraints.ModelConstraints.java

/**
 * Gathers the pk fields from the hierarchy of the given class, and copies them into the class.
 * //from w ww.j  a v  a  2 s  .  c  o m
 * @param classDef The root of the hierarchy
 * @throws ConstraintException If there is a conflict between the pk fields 
 */
private void ensurePKsFromHierarchy(ClassDescriptorDef classDef) throws ConstraintException {
    SequencedHashMap pks = new SequencedHashMap();

    for (Iterator it = classDef.getAllExtentClasses(); it.hasNext();) {
        ClassDescriptorDef subTypeDef = (ClassDescriptorDef) it.next();

        ArrayList subPKs = subTypeDef.getPrimaryKeys();

        // check against already present PKs
        for (Iterator pkIt = subPKs.iterator(); pkIt.hasNext();) {
            FieldDescriptorDef fieldDef = (FieldDescriptorDef) pkIt.next();
            FieldDescriptorDef foundPKDef = (FieldDescriptorDef) pks.get(fieldDef.getName());

            if (foundPKDef != null) {
                if (!isEqual(fieldDef, foundPKDef)) {
                    throw new ConstraintException(
                            "Cannot pull up the declaration of the required primary key " + fieldDef.getName()
                                    + " because its definitions in " + fieldDef.getOwner().getName() + " and "
                                    + foundPKDef.getOwner().getName() + " differ");
                }
            } else {
                pks.put(fieldDef.getName(), fieldDef);
            }
        }
    }

    ensureFields(classDef, pks.values());
}

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