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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) B32476-03 |
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java.lang.Object oracle.toplink.queryframework.DatabaseQuery oracle.toplink.queryframework.ReadQuery oracle.toplink.queryframework.DataReadQuery oracle.toplink.queryframework.DirectReadQuery oracle.toplink.queryframework.ValueReadQuery
public class ValueReadQuery
Purpose: Concrete class to perform a read of a single data value.
Responsibilities: Used in conjunction with CursoredStream size and Platform getSequence. This can be used to read a single data value (i.e. one field). A single data value is returned, or null if no rows are returned.
Field Summary |
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Fields inherited from class oracle.toplink.queryframework.DatabaseQuery |
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CascadeAggregateDelete, CascadeAllParts, CascadeByMapping, CascadeDependentParts, CascadePrivateParts, NoCascading |
Constructor Summary | |
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ValueReadQuery()
Initialize the state of the query. |
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ValueReadQuery(Call call)
Initialize the query to use the specified call. |
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ValueReadQuery(java.lang.String sqlString)
Initialize the query to use the specified SQL string. |
Method Summary | |
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boolean |
isValueReadQuery()
Return if this is a value read query. |
Methods inherited from class oracle.toplink.queryframework.DirectReadQuery |
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getValueConverter, isDirectReadQuery, setValueConverter |
Methods inherited from class oracle.toplink.queryframework.DataReadQuery |
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getContainerPolicy, isDataReadQuery, setContainerPolicy, useCollectionClass, useCursoredStream, useCursoredStream, useCursoredStream, useScrollableCursor, useScrollableCursor, useScrollableCursor |
Methods inherited from class oracle.toplink.queryframework.ReadQuery |
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cacheQueryResults, clearQueryResults, clearQueryResults, doNotCacheQueryResults, getFetchSize, getFirstResult, getMaxRows, getQueryResultsCachePolicy, isReadQuery, setFetchSize, setFirstResult, setMaxRows, setQueryResultsCachePolicy, setShouldCacheQueryResults, shouldCacheQueryResults |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ValueReadQuery()
public ValueReadQuery(java.lang.String sqlString)
public ValueReadQuery(Call call)
Method Detail |
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public boolean isValueReadQuery()
isValueReadQuery
in class DatabaseQuery
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