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package org.apache.tapestry.binding; |
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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.BindingException; |
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import org.apache.tapestry.IBinding; |
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import org.apache.tapestry.coerce.ValueConverter; |
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public abstract class AbstractBinding implements IBinding |
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{ |
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protected final String _description; |
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private final ValueConverter _valueConverter; |
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private final Location _location; |
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protected AbstractBinding(String description, ValueConverter valueConverter, Location location) |
46 | 0 | { |
47 | 0 | Defense.notNull(description, "description"); |
48 | 0 | Defense.notNull(valueConverter, "valueConverter"); |
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50 | 0 | _description = description; |
51 | 0 | _valueConverter = valueConverter; |
52 | 0 | _location = location; |
53 | 0 | } |
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public Location getLocation() |
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{ |
57 | 0 | return _location; |
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} |
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public void setObject(Object value) |
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{ |
66 | 0 | throw createReadOnlyBindingException(this); |
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} |
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public boolean isInvariant() |
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{ |
77 | 0 | return true; |
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} |
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public Object getObject(Class type) |
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{ |
82 | 0 | Defense.notNull(type, "type"); |
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84 | 0 | Object raw = getObject(); |
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try |
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{ |
88 | 0 | return _valueConverter.coerceValue(raw, type); |
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} |
90 | 0 | catch (Exception ex) |
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{ |
92 | 0 | String message = BindingMessages.convertObjectError(this, ex); |
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94 | 0 | throw new BindingException(message, getComponent(), _location, this, ex); |
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} |
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} |
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public Object getComponent() |
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{ |
108 | 0 | return null; |
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} |
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protected BindingException createReadOnlyBindingException(IBinding binding) |
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{ |
115 | 0 | return new BindingException(BindingMessages.readOnlyBinding(binding), binding); |
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} |
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public String getDescription() |
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{ |
122 | 0 | return _description; |
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} |
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public ValueConverter getValueConverter() |
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{ |
132 | 0 | return _valueConverter; |
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} |
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public String toString() |
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{ |
137 | 0 | StringBuffer buffer = new StringBuffer(); |
138 | 0 | buffer.append(getClass().getName()); |
139 | 0 | buffer.append("@"); |
140 | 0 | buffer.append(Integer.toHexString(hashCode())); |
141 | 0 | buffer.append("["); |
142 | 0 | buffer.append(_description); |
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144 | 0 | extendDescription(buffer); |
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146 | 0 | buffer.append(", location="); |
147 | 0 | buffer.append(_location); |
148 | 0 | buffer.append("]"); |
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150 | 0 | return buffer.toString(); |
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} |
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protected void extendDescription(StringBuffer buffer) |
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{ |
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159 | 0 | } |
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} |