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AbstractQueryImpl (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.impl
Class AbstractQueryImpl

java.lang.Object
  extended byorg.hibernate.impl.AbstractQueryImpl
All Implemented Interfaces:
Query
Direct Known Subclasses:
QueryImpl, SQLQueryImpl
public abstract class AbstractQueryImpl
extends Object
implements Query

Abstract implementation of the Query interface.

Author:
Gavin King, Max Andersen

Field Summary
protected  ParameterMetadata parameterMetadata
           
protected  SessionImplementor session
           
 
Constructor Summary
AbstractQueryImpl(String queryString, FlushMode flushMode, SessionImplementor session, ParameterMetadata parameterMetadata)
           
 
Method Summary
protected  void after()
           
protected  void before()
           
protected  Type determineType(int paramPosition, Object paramValue)
           
protected  Type determineType(int paramPosition, Object paramValue, Type defaultType)
           
protected  Type determineType(String paramName, Class clazz)
           
protected  Type determineType(String paramName, Object paramValue)
           
protected  Type determineType(String paramName, Object paramValue, Type defaultType)
           
protected  String expandParameterLists(Map namedParamsCopy)
          Warning: adds new parameters to the argument by side-effect, as well as mutating the query string!
protected abstract  Map getLockModes()
           
protected  Map getNamedParameterLists()
          Retreive the value map for any named parameter lists (i.e., for auto-expansion) bound to this query.
 String[] getNamedParameters()
          Returns an array representing all named parameter names encountered during (intial) parsing of the query.
protected  Map getNamedParams()
          Returns a shallow copy of the named parameter value map.
 QueryParameters getQueryParameters(Map namedParams)
           
 String getQueryString()
          Get the query string.
 String[] getReturnAliases()
          Return the HQL select clause aliases (if any)
 Type[] getReturnTypes()
          Return the Hibernate types of the query result set.
protected  RowSelection getRowSelection()
           
 RowSelection getSelection()
           
protected  List getTypes()
          Retreives the list of parameter types bound to this query for ordinal parameters.
protected  List getValues()
          Retreives the list of parameter values bound to this query for ordinal parameters.
 boolean hasNamedParameters()
          Does this query contain named parameters?
 boolean isReadOnly()
           
 Query setBigDecimal(int position, BigDecimal number)
           
 Query setBigDecimal(String name, BigDecimal number)
           
 Query setBigInteger(int position, BigInteger number)
           
 Query setBigInteger(String name, BigInteger number)
           
 Query setBinary(int position, byte[] val)
           
 Query setBinary(String name, byte[] val)
           
 Query setBoolean(int position, boolean val)
           
 Query setBoolean(String name, boolean val)
           
 Query setByte(int position, byte val)
           
 Query setByte(String name, byte val)
           
 Query setCacheable(boolean cacheable)
          Enable caching of this query result set.
 Query setCacheMode(CacheMode cacheMode)
          Override the current session cache mode, just for this query.
 Query setCacheRegion(String cacheRegion)
          Set the name of the cache region.
 Query setCalendar(int position, Calendar calendar)
           
 Query setCalendar(String name, Calendar calendar)
           
 Query setCalendarDate(int position, Calendar calendar)
           
 Query setCalendarDate(String name, Calendar calendar)
           
 Query setCharacter(int position, char val)
           
 Query setCharacter(String name, char val)
           
 Query setCollectionKey(Serializable collectionKey)
           
 Query setComment(String comment)
          Add a comment to the generated SQL.
 Query setDate(int position, Date date)
           
 Query setDate(String name, Date date)
           
 Query setDouble(int position, double val)
           
 Query setDouble(String name, double val)
           
 Query setEntity(int position, Object val)
          Bind an instance of a mapped persistent class to a JDBC-style query parameter.
 Query setEntity(String name, Object val)
          Bind an instance of a mapped persistent class to a named query parameter.
 Query setFetchSize(int fetchSize)
          Set a fetch size for the underlying JDBC query.
 Query setFirstResult(int firstResult)
          Set the first row to retrieve.
 Query setFloat(int position, float val)
           
 Query setFloat(String name, float val)
           
 Query setFlushMode(FlushMode flushMode)
          Override the current session flush mode, just for this query.
 Query setInteger(int position, int val)
           
 Query setInteger(String name, int val)
           
 Query setLocale(int position, Locale locale)
           
 Query setLocale(String name, Locale locale)
           
 Query setLong(int position, long val)
           
 Query setLong(String name, long val)
           
 Query setMaxResults(int maxResults)
          Set the maximum number of rows to retrieve.
 void setOptionalEntityName(String optionalEntityName)
           
 void setOptionalId(Serializable optionalId)
           
 void setOptionalObject(Object optionalObject)
           
 Query setParameter(int position, Object val)
          Bind a value to a JDBC-style query parameter.
 Query setParameter(int position, Object val, Type type)
          Bind a value to a JDBC-style query parameter.
 Query setParameter(String name, Object val)
          Bind a value to a named query parameter.
 Query setParameter(String name, Object val, Type type)
          Bind a value to a named query parameter.
 Query setParameterList(String name, Collection vals)
          Bind multiple values to a named query parameter.
 Query setParameterList(String name, Collection vals, Type type)
          Bind multiple values to a named query parameter.
 Query setParameterList(String name, Object[] vals)
          Bind multiple values to a named query parameter.
 Query setParameterList(String name, Object[] vals, Type type)
          Bind multiple values to a named query parameter.
 Query setParameters(Object[] values, Type[] types)
          Bind values and types to positional parameters.
 Query setProperties(Map map)
          Bind the values of the given Map for each named parameters of the query, matching key names with parameter names and mapping value types to Hibernate types using hueristics.
 Query setProperties(Object bean)
          Bind the property values of the given bean to named parameters of the query, matching property names with parameter names and mapping property types to Hibernate types using hueristics.
 Query setReadOnly(boolean readOnly)
          Entities retrieved by this query will be loaded in a read-only mode where Hibernate will never dirty-check them or make changes persistent.
 Query setResultTransformer(ResultTransformer transformer)
          Set a strategy for handling the query results.
 Query setSerializable(int position, Serializable val)
           
 Query setSerializable(String name, Serializable val)
           
 Query setShort(int position, short val)
           
 Query setShort(String name, short val)
           
 Query setString(int position, String val)
           
 Query setString(String name, String val)
           
 Query setText(int position, String val)
           
 Query setText(String name, String val)
           
 Query setTime(int position, Date date)
           
 Query setTime(String name, Date date)
           
 Query setTimeout(int timeout)
          Set a timeout for the underlying JDBC query.
 Query setTimestamp(int position, Date date)
           
 Query setTimestamp(String name, Date date)
           
 String toString()
           
 Type[] typeArray()
           
 Object uniqueResult()
          Convenience method to return a single instance that matches the query, or null if the query returns no results.
 Object[] valueArray()
           
protected  void verifyParameters()
          Perform parameter validation.
protected  void verifyParameters(boolean reserveFirstParameter)
          Perform parameter validation.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.hibernate.Query
executeUpdate, iterate, list, scroll, scroll, setLockMode
 

Field Detail

session

protected final SessionImplementor session

parameterMetadata

protected final ParameterMetadata parameterMetadata
Constructor Detail

AbstractQueryImpl

public AbstractQueryImpl(String queryString,
                         FlushMode flushMode,
                         SessionImplementor session,
                         ParameterMetadata parameterMetadata)
Method Detail

toString

public String toString()

getQueryString

public final String getQueryString()
Description copied from interface: Query
Get the query string.

Specified by:
getQueryString in interface Query
Returns:
the query string

getSelection

public RowSelection getSelection()

setFlushMode

public Query setFlushMode(FlushMode flushMode)
Description copied from interface: Query
Override the current session flush mode, just for this query.

Specified by:
setFlushMode in interface Query
See Also:
FlushMode

setCacheMode

public Query setCacheMode(CacheMode cacheMode)
Description copied from interface: Query
Override the current session cache mode, just for this query.

Specified by:
setCacheMode in interface Query
See Also:
CacheMode

setCacheable

public Query setCacheable(boolean cacheable)
Description copied from interface: Query
Enable caching of this query result set.

Specified by:
setCacheable in interface Query
Parameters:
cacheable - Should the query results be cacheable?

setCacheRegion

public Query setCacheRegion(String cacheRegion)
Description copied from interface: Query
Set the name of the cache region.

Specified by:
setCacheRegion in interface Query
Parameters:
cacheRegion - the name of a query cache region, or null for the default query cache

setComment

public Query setComment(String comment)
Description copied from interface: Query
Add a comment to the generated SQL.

Specified by:
setComment in interface Query
Parameters:
comment - a human-readable string

setFirstResult

public Query setFirstResult(int firstResult)
Description copied from interface: Query
Set the first row to retrieve. If not set, rows will be retrieved beginnning from row 0.

Specified by:
setFirstResult in interface Query
Parameters:
firstResult - a row number, numbered from 0

setMaxResults

public Query setMaxResults(int maxResults)
Description copied from interface: Query
Set the maximum number of rows to retrieve. If not set, there is no limit to the number of rows retrieved.

Specified by:
setMaxResults in interface Query
Parameters:
maxResults - the maximum number of rows

setTimeout

public Query setTimeout(int timeout)
Description copied from interface: Query
Set a timeout for the underlying JDBC query.

Specified by:
setTimeout in interface Query
Parameters:
timeout - the timeout in seconds

setFetchSize

public Query setFetchSize(int fetchSize)
Description copied from interface: Query
Set a fetch size for the underlying JDBC query.

Specified by:
setFetchSize in interface Query
Parameters:
fetchSize - the fetch size

getReturnTypes

public Type[] getReturnTypes()
                      throws HibernateException
Description copied from interface: Query
Return the Hibernate types of the query result set.

Specified by:
getReturnTypes in interface Query
Returns:
an array of types
Throws:
HibernateException

getReturnAliases

public String[] getReturnAliases()
                          throws HibernateException
Description copied from interface: Query
Return the HQL select clause aliases (if any)

Specified by:
getReturnAliases in interface Query
Returns:
an array of aliases as strings
Throws:
HibernateException

setCollectionKey

public Query setCollectionKey(Serializable collectionKey)

isReadOnly

public boolean isReadOnly()

setReadOnly

public Query setReadOnly(boolean readOnly)
Description copied from interface: Query
Entities retrieved by this query will be loaded in a read-only mode where Hibernate will never dirty-check them or make changes persistent.

Specified by:
setReadOnly in interface Query

setResultTransformer

public Query setResultTransformer(ResultTransformer transformer)
Description copied from interface: Query
Set a strategy for handling the query results. This can be used to change "shape" of the query result.

Specified by:
setResultTransformer in interface Query
Parameters:
transformer - The transformer to apply
Returns:
this (for method chaining)

setOptionalEntityName

public void setOptionalEntityName(String optionalEntityName)

setOptionalId

public void setOptionalId(Serializable optionalId)

setOptionalObject

public void setOptionalObject(Object optionalObject)

getLockModes

protected abstract Map getLockModes()

getNamedParams

protected Map getNamedParams()
Returns a shallow copy of the named parameter value map.

Returns:
Shallow copy of the named parameter value map

getNamedParameters

public String[] getNamedParameters()
                            throws HibernateException
Returns an array representing all named parameter names encountered during (intial) parsing of the query.

Note initial here means different things depending on whether this is a native-sql query or an HQL/filter query. For native-sql, a precursory inspection of the query string is performed specifically to locate defined parameters. For HQL/filter queries, this is the information returned from the query-translator. This distinction holds true for all parameter metadata exposed here.

Specified by:
getNamedParameters in interface Query
Returns:
Array of named parameter names.
Throws:
HibernateException

hasNamedParameters

public boolean hasNamedParameters()
Does this query contain named parameters?

Returns:
True if the query was found to contain named parameters; false otherwise;

getNamedParameterLists

protected Map getNamedParameterLists()
Retreive the value map for any named parameter lists (i.e., for auto-expansion) bound to this query.

Returns:
The parameter list value map.

getValues

protected List getValues()
Retreives the list of parameter values bound to this query for ordinal parameters.

Returns:
The ordinal parameter values.

getTypes

protected List getTypes()
Retreives the list of parameter types bound to this query for ordinal parameters.

Returns:
The ordinal parameter types.

verifyParameters

protected void verifyParameters()
                         throws QueryException
Perform parameter validation. Used prior to executing the encapsulated query.

Throws:
QueryException

verifyParameters

protected void verifyParameters(boolean reserveFirstParameter)
                         throws HibernateException
Perform parameter validation. Used prior to executing the encapsulated query.

Parameters:
reserveFirstParameter - if true, the first ? will not be verified since its needed for e.g. callable statements returning a out parameter
Throws:
HibernateException

setParameter

public Query setParameter(int position,
                          Object val,
                          Type type)
Description copied from interface: Query
Bind a value to a JDBC-style query parameter.

Specified by:
setParameter in interface Query
Parameters:
position - the position of the parameter in the query string, numbered from 0.
val - the possibly-null parameter value
type - the Hibernate type

setParameter

public Query setParameter(String name,
                          Object val,
                          Type type)
Description copied from interface: Query
Bind a value to a named query parameter.

Specified by:
setParameter in interface Query
Parameters:
name - the name of the parameter
val - the possibly-null parameter value
type - the Hibernate type

setParameter

public Query setParameter(int position,
                          Object val)
                   throws HibernateException
Description copied from interface: Query
Bind a value to a JDBC-style query parameter. The Hibernate type of the parameter is first detected via the usage/position in the query and if not sufficient secondly guessed from the class of the given object.

Specified by:
setParameter in interface Query
Parameters:
position - the position of the parameter in the query string, numbered from 0.
val - the non-null parameter value
Throws:
HibernateException - if no type could be determined

setParameter

public Query setParameter(String name,
                          Object val)
                   throws HibernateException
Description copied from interface: Query
Bind a value to a named query parameter. The Hibernate type of the parameter is first detected via the usage/position in the query and if not sufficient secondly guessed from the class of the given object.

Specified by:
setParameter in interface Query
Parameters:
name - the name of the parameter
val - the non-null parameter value
Throws:
HibernateException - if no type could be determined

determineType

protected Type determineType(int paramPosition,
                             Object paramValue,
                             Type defaultType)

determineType

protected Type determineType(int paramPosition,
                             Object paramValue)
                      throws HibernateException
Throws:
HibernateException

determineType

protected Type determineType(String paramName,
                             Object paramValue,
                             Type defaultType)

determineType

protected Type determineType(String paramName,
                             Object paramValue)
                      throws HibernateException
Throws:
HibernateException

determineType

protected Type determineType(String paramName,
                             Class clazz)
                      throws HibernateException
Throws:
HibernateException

setString

public Query setString(int position,
                       String val)
Specified by:
setString in interface Query

setCharacter

public Query setCharacter(int position,
                          char val)
Specified by:
setCharacter in interface Query

setBoolean

public Query setBoolean(int position,
                        boolean val)
Specified by:
setBoolean in interface Query

setByte

public Query setByte(int position,
                     byte val)
Specified by:
setByte in interface Query

setShort

public Query setShort(int position,
                      short val)
Specified by:
setShort in interface Query

setInteger

public Query setInteger(int position,
                        int val)
Specified by:
setInteger in interface Query

setLong

public Query setLong(int position,
                     long val)
Specified by:
setLong in interface Query

setFloat

public Query setFloat(int position,
                      float val)
Specified by:
setFloat in interface Query

setDouble

public Query setDouble(int position,
                       double val)
Specified by:
setDouble in interface Query

setBinary

public Query setBinary(int position,
                       byte[] val)
Specified by:
setBinary in interface Query

setText

public Query setText(int position,
                     String val)
Specified by:
setText in interface Query

setSerializable

public Query setSerializable(int position,
                             Serializable val)
Specified by:
setSerializable in interface Query

setDate

public Query setDate(int position,
                     Date date)
Specified by:
setDate in interface Query

setTime

public Query setTime(int position,
                     Date date)
Specified by:
setTime in interface Query

setTimestamp

public Query setTimestamp(int position,
                          Date date)
Specified by:
setTimestamp in interface Query

setEntity

public Query setEntity(int position,
                       Object val)
Description copied from interface: Query
Bind an instance of a mapped persistent class to a JDBC-style query parameter.

Specified by:
setEntity in interface Query
Parameters:
position - the position of the parameter in the query string, numbered from 0.
val - a non-null instance of a persistent class

setLocale

public Query setLocale(int position,
                       Locale locale)
Specified by:
setLocale in interface Query

setCalendar

public Query setCalendar(int position,
                         Calendar calendar)
Specified by:
setCalendar in interface Query

setCalendarDate

public Query setCalendarDate(int position,
                             Calendar calendar)
Specified by:
setCalendarDate in interface Query

setBinary

public Query setBinary(String name,
                       byte[] val)
Specified by:
setBinary in interface Query

setText

public Query setText(String name,
                     String val)
Specified by:
setText in interface Query

setBoolean

public Query setBoolean(String name,
                        boolean val)
Specified by:
setBoolean in interface Query

setByte

public Query setByte(String name,
                     byte val)
Specified by:
setByte in interface Query

setCharacter

public Query setCharacter(String name,
                          char val)
Specified by:
setCharacter in interface Query

setDate

public Query setDate(String name,
                     Date date)
Specified by:
setDate in interface Query

setDouble

public Query setDouble(String name,
                       double val)
Specified by:
setDouble in interface Query

setEntity

public Query setEntity(String name,
                       Object val)
Description copied from interface: Query
Bind an instance of a mapped persistent class to a named query parameter.

Specified by:
setEntity in interface Query
Parameters:
name - the name of the parameter
val - a non-null instance of a persistent class

setFloat

public Query setFloat(String name,
                      float val)
Specified by:
setFloat in interface Query

setInteger

public Query setInteger(String name,
                        int val)
Specified by:
setInteger in interface Query

setLocale

public Query setLocale(String name,
                       Locale locale)
Specified by:
setLocale in interface Query

setCalendar

public Query setCalendar(String name,
                         Calendar calendar)
Specified by:
setCalendar in interface Query

setCalendarDate

public Query setCalendarDate(String name,
                             Calendar calendar)
Specified by:
setCalendarDate in interface Query

setLong

public Query setLong(String name,
                     long val)
Specified by:
setLong in interface Query

setSerializable

public Query setSerializable(String name,
                             Serializable val)
Specified by:
setSerializable in interface Query

setShort

public Query setShort(String name,
                      short val)
Specified by:
setShort in interface Query

setString

public Query setString(String name,
                       String val)
Specified by:
setString in interface Query

setTime

public Query setTime(String name,
                     Date date)
Specified by:
setTime in interface Query

setTimestamp

public Query setTimestamp(String name,
                          Date date)
Specified by:
setTimestamp in interface Query

setBigDecimal

public Query setBigDecimal(int position,
                           BigDecimal number)
Specified by:
setBigDecimal in interface Query

setBigDecimal

public Query setBigDecimal(String name,
                           BigDecimal number)
Specified by:
setBigDecimal in interface Query

setBigInteger

public Query setBigInteger(int position,
                           BigInteger number)
Specified by:
setBigInteger in interface Query

setBigInteger

public Query setBigInteger(String name,
                           BigInteger number)
Specified by:
setBigInteger in interface Query

setParameterList

public Query setParameterList(String name,
                              Collection vals,
                              Type type)
                       throws HibernateException
Description copied from interface: Query
Bind multiple values to a named query parameter. This is useful for binding a list of values to an expression such as foo.bar in (:value_list).

Specified by:
setParameterList in interface Query
Parameters:
name - the name of the parameter
vals - a collection of values to list
type - the Hibernate type of the values
Throws:
HibernateException

expandParameterLists

protected String expandParameterLists(Map namedParamsCopy)
Warning: adds new parameters to the argument by side-effect, as well as mutating the query string!

setParameterList

public Query setParameterList(String name,
                              Collection vals)
                       throws HibernateException
Description copied from interface: Query
Bind multiple values to a named query parameter. The Hibernate type of the parameter is first detected via the usage/position in the query and if not sufficient secondly guessed from the class of the first object in the collection. This is useful for binding a list of values to an expression such as foo.bar in (:value_list).

Specified by:
setParameterList in interface Query
Parameters:
name - the name of the parameter
vals - a collection of values to list
Throws:
HibernateException

setParameterList

public Query setParameterList(String name,
                              Object[] vals,
                              Type type)
                       throws HibernateException
Description copied from interface: Query
Bind multiple values to a named query parameter. This is useful for binding a list of values to an expression such as foo.bar in (:value_list).

Specified by:
setParameterList in interface Query
Parameters:
name - the name of the parameter
vals - a collection of values to list
type - the Hibernate type of the values
Throws:
HibernateException

setParameterList

public Query setParameterList(String name,
                              Object[] vals)
                       throws HibernateException
Description copied from interface: Query
Bind multiple values to a named query parameter. The Hibernate type of the parameter is first detected via the usage/position in the query and if not sufficient secondly guessed from the class of the first object in the array. This is useful for binding a list of values to an expression such as foo.bar in (:value_list).

Specified by:
setParameterList in interface Query
Parameters:
name - the name of the parameter
vals - a collection of values to list
Throws:
HibernateException

setProperties

public Query setProperties(Map map)
                    throws HibernateException
Description copied from interface: Query
Bind the values of the given Map for each named parameters of the query, matching key names with parameter names and mapping value types to Hibernate types using hueristics.

Specified by:
setProperties in interface Query
Parameters:
map - a java.util.Map
Throws:
HibernateException

setProperties

public Query setProperties(Object bean)
                    throws HibernateException
Description copied from interface: Query
Bind the property values of the given bean to named parameters of the query, matching property names with parameter names and mapping property types to Hibernate types using hueristics.

Specified by:
setProperties in interface Query
Parameters:
bean - any JavaBean or POJO
Throws:
HibernateException

setParameters

public Query setParameters(Object[] values,
                           Type[] types)
Description copied from interface: Query
Bind values and types to positional parameters.

Specified by:
setParameters in interface Query

uniqueResult

public Object uniqueResult()
                    throws HibernateException
Description copied from interface: Query
Convenience method to return a single instance that matches the query, or null if the query returns no results.

Specified by:
uniqueResult in interface Query
Returns:
the single result or null
Throws:
HibernateException

getRowSelection

protected RowSelection getRowSelection()

typeArray

public Type[] typeArray()

valueArray

public Object[] valueArray()

getQueryParameters

public QueryParameters getQueryParameters(Map namedParams)

before

protected void before()

after

protected void after()
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