Package org.postgresql.core.v3
Class CompositeQuery
java.lang.Object
org.postgresql.core.v3.CompositeQuery
- All Implemented Interfaces:
Query
V3 Query implementation for queries that involve multiple statements. We split it up into one
SimpleQuery per statement, and wrap the corresponding per-statement SimpleParameterList objects
in a CompositeParameterList.
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Close this query and free any server-side resources associated with it.Create a ParameterList suitable for storing parameters associated with this Query.int
Get the number of times this Query has been batched.Returns SQL in native for database format.Get a map that a result set can use to find the index associated to a name.Returns properties of the query (sql keyword, and some other parsing info).Query[]
Return a list of the Query objects that make up this query.boolean
isEmpty()
boolean
toString()
toString
(ParameterList parameters) Stringize this query to a human-readable form, substituting particular parameter values for parameter placeholders.
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Field Details
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subqueries
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offsets
private final int[] offsets
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Constructor Details
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CompositeQuery
CompositeQuery(SimpleQuery[] subqueries, int[] offsets)
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Method Details
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createParameterList
Description copied from interface:Query
Create a ParameterList suitable for storing parameters associated with this Query.If this query has no parameters, a ParameterList will be returned, but it may be a shared immutable object. If this query does have parameters, the returned ParameterList is a new list, unshared by other callers.
- Specified by:
createParameterList
in interfaceQuery
- Returns:
- a suitable ParameterList instance for this query
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toString
Description copied from interface:Query
Stringize this query to a human-readable form, substituting particular parameter values for parameter placeholders.- Specified by:
toString
in interfaceQuery
- Parameters:
parameters
- a ParameterList returned by this Query'sQuery.createParameterList()
method, ornull
to leave the parameter placeholders unsubstituted.- Returns:
- a human-readable representation of this query
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getNativeSql
Description copied from interface:Query
Returns SQL in native for database format.- Specified by:
getNativeSql
in interfaceQuery
- Returns:
- SQL in native for database format
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getSqlCommand
Description copied from interface:Query
Returns properties of the query (sql keyword, and some other parsing info).- Specified by:
getSqlCommand
in interfaceQuery
- Returns:
- returns properties of the query (sql keyword, and some other parsing info) or null if not applicable
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toString
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close
public void close()Description copied from interface:Query
Close this query and free any server-side resources associated with it. The resources may not be immediately deallocated, but closing a Query may make the deallocation more prompt.A closed Query should not be executed.
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getSubqueries
Description copied from interface:Query
Return a list of the Query objects that make up this query. If this object is already a SimpleQuery, returns null (avoids an extra array construction in the common case).- Specified by:
getSubqueries
in interfaceQuery
- Returns:
- an array of single-statement queries, or
null
if this object is already a single-statement query.
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isStatementDescribed
public boolean isStatementDescribed()- Specified by:
isStatementDescribed
in interfaceQuery
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isEmpty
public boolean isEmpty() -
getBatchSize
public int getBatchSize()Description copied from interface:Query
Get the number of times this Query has been batched.- Specified by:
getBatchSize
in interfaceQuery
- Returns:
- number of times
addBatch()
has been called.
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getResultSetColumnNameIndexMap
Description copied from interface:Query
Get a map that a result set can use to find the index associated to a name.- Specified by:
getResultSetColumnNameIndexMap
in interfaceQuery
- Returns:
- null if the query implementation does not support this method.
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