public void setElementType()

in src/main/java/org/apache/commons/beanutils2/LazyDynaList.java [461:503]
34 lines of code
10 McCabe index (conditional complexity)

    public void setElementType(final Class<?> elementType) {
        if (elementType == null) {
            throw new IllegalArgumentException("Element Type is missing");
        }

        final boolean changeType = this.elementType != null && !this.elementType.equals(elementType);
        if (changeType && !isEmpty()) {
            throw new IllegalStateException("Element Type cannot be reset");
        }

        this.elementType = elementType;

        // Create a new object of the specified type
        Object object = null;
        try {
            object = elementType.newInstance();
        } catch (final Exception e) {
            throw new IllegalArgumentException("Error creating type: "
                           + elementType.getName() + " - " + e);
        }

        // Create a DynaBean
        DynaBean dynaBean = null;
        if (Map.class.isAssignableFrom(elementType)) {
            dynaBean = createDynaBeanForMapProperty(object);
            this.elementDynaClass = dynaBean.getDynaClass();
        } else if (DynaBean.class.isAssignableFrom(elementType)) {
            dynaBean = (DynaBean)object;
            this.elementDynaClass = dynaBean.getDynaClass();
        } else {
            dynaBean = new WrapDynaBean(object);
            this.wrapDynaClass = (WrapDynaClass)dynaBean.getDynaClass();
        }

        this.elementDynaBeanType = dynaBean.getClass();

        // Re-calculate the type
        if (WrapDynaBean.class.isAssignableFrom(elementDynaBeanType )) {
            this.elementType = ((WrapDynaBean)dynaBean).getInstance().getClass();
        } else if (LazyDynaMap.class.isAssignableFrom(elementDynaBeanType )) {
            this.elementType = ((LazyDynaMap)dynaBean).getMap().getClass();
        }
    }