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package org.apache.tapestry.binding; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.Location; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.tapestry.IComponent; |
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import org.apache.tapestry.coerce.ValueConverter; |
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import org.apache.tapestry.services.ComponentPropertySource; |
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public class MetaBinding extends AbstractBinding |
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{ |
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private final IComponent _component; |
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private final String _key; |
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private final ComponentPropertySource _propertySource; |
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public MetaBinding(String description, ValueConverter valueConverter, Location location, IComponent component, |
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ComponentPropertySource propertySource, String key) |
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{ |
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super(description, valueConverter, location); |
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Defense.notNull(component, "component"); |
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Defense.notNull(propertySource, "propertySource"); |
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Defense.notNull(key, "key"); |
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_component = component; |
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_key = key; |
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_propertySource = propertySource; |
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} |
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public Object getObject() |
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{ |
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try |
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{ |
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return _propertySource.getComponentProperty(_component, _key); |
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} |
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catch (Exception ex) |
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{ |
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throw new ApplicationRuntimeException(ex.getMessage(), getLocation(), ex); |
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} |
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} |
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public Object getComponent() |
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{ |
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return _component; |
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} |
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public String toString() |
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{ |
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StringBuffer buffer = new StringBuffer("MetaBinding"); |
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buffer.append('['); |
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buffer.append(_component.getExtendedId()); |
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buffer.append(' '); |
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buffer.append(_key); |
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buffer.append(']'); |
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return buffer.toString(); |
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} |
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} |