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org.apache.derby.impl.store.raw.data

pack-priv Class PageCreationArgs

Class Inheritance

extends Object

java.lang.Object
org.apache.derby.impl.store.raw.data.PageCreationArgs

This class holds information that is passed to CachedPage.createPage() and used when a page object (either a StoredPage or an AllocPage) is created.

Field Summary

Modifier and Type	Field and Description
pack-priv final int	containerInfoSize Size of the container information stored in the `AllocPage`.
pack-priv final int	formatId Tells which type of page to create.
pack-priv final int	minimumRecordSize Minimum space to reserve for record portion length of row.
pack-priv final int	pageSize The size of the page in bytes.
pack-priv final int	spareSpace % of page to keep free for updates.
pack-priv final int	syncFlag Tells whether writes to this page should be synced.

Constructor Summary

Access	Constructor and Description
pack-priv	PageCreationArgs(int formatId, int syncFlag, int pageSize, int spareSpace, int minimumRecordSize, int containerInfoSize)

Method Summary

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

containerInfoSize	back to summary
pack-priv final int containerInfoSize Size of the container information stored in the `AllocPage`.

formatId	back to summary
pack-priv final int formatId Tells which type of page to create. Either `StoredPage.FORMAT_NUMBER` or `AllocPage.FORMAT_NUMBER`.

minimumRecordSize	back to summary
pack-priv final int minimumRecordSize Minimum space to reserve for record portion length of row.

pageSize	back to summary
pack-priv final int pageSize The size of the page in bytes.

spareSpace	back to summary
pack-priv final int spareSpace % of page to keep free for updates. Not used for `AllocPage`.

syncFlag	back to summary
pack-priv final int syncFlag Tells whether writes to this page should be synced. Should be `CachedPage.WRITE_SYNC` or `CachedPage.WRITE_NO_SYNC`, or 0 if the page is in a temporary container.

Constructor Detail

PageCreationArgs	back to summary
pack-priv PageCreationArgs(int formatId, int syncFlag, int pageSize, int spareSpace, int minimumRecordSize, int containerInfoSize)