Package org.apache.tapestry5.services
Interface PersistentFieldBundle
- All Known Implementing Classes:
PersistentFieldBundleImpl
public interface PersistentFieldBundle
Encapsulates persisted property information for an entire page.
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Method Summary
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Method Details
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containsValue
Checks to see if a persistent value has been stored for the indicated component and field. TODO: This method can probably be removed; it doesn't look like its used (instead, we if check getValue() returns null).- Parameters:
componentId
- the nested id of the component (within the page), may be null or blank for the root component of the pagefieldName
- the name of the field whose value was persisted- Returns:
- true if a change has been stored
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getValue
- Parameters:
componentId
- the nested if of the component (within the page), may be null or blank for the root component of the pagefieldName
- the name of the field whose value was persisted- Returns:
- the persisted value, possibly null
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