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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.data.util.sqlcontainer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import com.vaadin.data.Item;
import com.vaadin.data.Property;
/**
* RowItem represents one row of a result set obtained from a QueryDelegate.
*
* Note that depending on the QueryDelegate in use this does not necessarily map
* into an actual row in a database table.
*/
public final class RowItem implements Item {
private static final long serialVersionUID = -6228966439127951408L;
private SQLContainer container;
private RowId id;
private Collection<ColumnProperty> properties;
/**
* Prevent instantiation without required parameters.
*/
@SuppressWarnings("unused")
private RowItem() {
}
public RowItem(SQLContainer container, RowId id,
Collection<ColumnProperty> properties) {
if (container == null) {
throw new IllegalArgumentException("Container cannot be null.");
}
if (id == null) {
throw new IllegalArgumentException("Row ID cannot be null.");
}
this.container = container;
this.properties = properties;
/* Set this RowItem as owner to the properties */
if (properties != null) {
for (ColumnProperty p : properties) {
p.setOwner(this);
}
}
this.id = id;
}
public Property<?> getItemProperty(Object id) {
if (id instanceof String && id != null) {
for (ColumnProperty cp : properties) {
if (id.equals(cp.getPropertyId())) {
return cp;
}
}
}
return null;
}
public Collection<?> getItemPropertyIds() {
Collection<String> ids = new ArrayList<String>(properties.size());
for (ColumnProperty cp : properties) {
ids.add(cp.getPropertyId());
}
return Collections.unmodifiableCollection(ids);
}
/**
* Adding properties is not supported. Properties are generated by
* SQLContainer.
*/
public boolean addItemProperty(Object id, Property property)
throws UnsupportedOperationException {
throw new UnsupportedOperationException();
}
/**
* Removing properties is not supported. Properties are generated by
* SQLContainer.
*/
public boolean removeItemProperty(Object id)
throws UnsupportedOperationException {
throw new UnsupportedOperationException();
}
public RowId getId() {
return id;
}
public SQLContainer getContainer() {
return container;
}
public boolean isModified() {
if (properties != null) {
for (ColumnProperty p : properties) {
if (p.isModified()) {
return true;
}
}
}
return false;
}
@Override
public String toString() {
StringBuffer s = new StringBuffer();
s.append("ID:");
s.append(getId().toString());
for (Object propId : getItemPropertyIds()) {
s.append("|");
s.append(propId.toString());
s.append(":");
Object value = getItemProperty(propId).getValue();
s.append((null != value) ? value.toString() : null);
}
return s.toString();
}
public void commit() {
if (properties != null) {
for (ColumnProperty p : properties) {
p.commit();
}
}
}
}
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