Package com.mckoi.database.jdbc
Class RowCache
- java.lang.Object
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- com.mckoi.database.jdbc.RowCache
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final class RowCache extends java.lang.Object
A Cache that stores rows retrieved from the server in result set's. This provides various mechanisms for determining the best rows to pick out that haven't been cached, etc.
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
RowCache.CachedRow
A cached row.private static class
RowCache.RowRef
Used for the hash key in the cache.
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Constructor Summary
Constructors Constructor Description RowCache(int cache_size, int max_size)
Constructs the cache.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) void
clear()
Flushes the complete contents of the cache.(package private) java.util.Vector
getResultPart(java.util.Vector result_block, MConnection connection, int result_id, int row_index, int row_count, int col_count, int total_row_count)
Requests a block of parts.
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Field Detail
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row_cache
private Cache row_cache
The actual cache that stores the rows.
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Method Detail
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getResultPart
java.util.Vector getResultPart(java.util.Vector result_block, MConnection connection, int result_id, int row_index, int row_count, int col_count, int total_row_count) throws java.io.IOException, java.sql.SQLException
Requests a block of parts. If the block can be completely retrieved from the cache then it is done so. Otherwise, it forwards the request for the rows onto the connection object.- Throws:
java.io.IOException
java.sql.SQLException
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clear
void clear()
Flushes the complete contents of the cache.
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