Package javax.persistence

Interface Query

All Known Subinterfaces:
StoredProcedureQuery, TypedQuery<X>
public interface Query
Interface used to control query execution.
Since:
Java Persistence 1.0
See Also:

  • Method Details

    • getResultList

      List getResultList()
      Execute a SELECT query and return the query results as an untyped List.
      Returns:
      a list of the results
      Throws:
      IllegalStateException - if called for a Java Persistence query language UPDATE or DELETE statement
      QueryTimeoutException - if the query execution exceeds the query timeout value set and only the statement is rolled back
      TransactionRequiredException - if a lock mode other than NONE has been set and there is no transaction or the persistence context has not been joined to the transaction
      PessimisticLockException - if pessimistic locking fails and the transaction is rolled back
      LockTimeoutException - if pessimistic locking fails and only the statement is rolled back
      PersistenceException - if the query execution exceeds the query timeout value set and the transaction is rolled back

    • getResultStream

      default Stream getResultStream()
      Execute a SELECT query and return the query results as an untyped java.util.stream.Stream. By default this method delegates to getResultList().stream(), however persistence provider may choose to override this method to provide additional capabilities.
      Returns:
      a stream of the results
      Throws:
      IllegalStateException - if called for a Java Persistence query language UPDATE or DELETE statement
      QueryTimeoutException - if the query execution exceeds the query timeout value set and only the statement is rolled back
      TransactionRequiredException - if a lock mode other than NONE has been set and there is no transaction or the persistence context has not been joined to the transaction
      PessimisticLockException - if pessimistic locking fails and the transaction is rolled back
      LockTimeoutException - if pessimistic locking fails and only the statement is rolled back
      PersistenceException - if the query execution exceeds the query timeout value set and the transaction is rolled back
      Since:
      2.2
      See Also:

    • getSingleResult

      Object getSingleResult()
      Execute a SELECT query that returns a single untyped result.
      Returns:
      the result
      Throws:
      NoResultException - if there is no result
      NonUniqueResultException - if more than one result
      IllegalStateException - if called for a Java Persistence query language UPDATE or DELETE statement
      QueryTimeoutException - if the query execution exceeds the query timeout value set and only the statement is rolled back
      TransactionRequiredException - if a lock mode other than NONE has been set and there is no transaction or the persistence context has not been joined to the transaction
      PessimisticLockException - if pessimistic locking fails and the transaction is rolled back
      LockTimeoutException - if pessimistic locking fails and only the statement is rolled back
      PersistenceException - if the query execution exceeds the query timeout value set and the transaction is rolled back

    • executeUpdate

      int executeUpdate()
      Execute an update or delete statement.
      Returns:
      the number of entities updated or deleted
      Throws:
      IllegalStateException - if called for a Java Persistence query language SELECT statement or for a criteria query
      TransactionRequiredException - if there is no transaction or the persistence context has not been joined to the transaction
      QueryTimeoutException - if the statement execution exceeds the query timeout value set and only the statement is rolled back
      PersistenceException - if the query execution exceeds the query timeout value set and the transaction is rolled back

    • setMaxResults

      Query setMaxResults(int maxResult)
      Set the maximum number of results to retrieve.
      Parameters:
      maxResult - maximum number of results to retrieve
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the argument is negative

    • getMaxResults

      int getMaxResults()
      The maximum number of results the query object was set to retrieve. Returns Integer.MAX_VALUE if setMaxResults was not applied to the query object.
      Returns:
      maximum number of results
      Since:
      Java Persistence 2.0

    • setFirstResult

      Query setFirstResult(int startPosition)
      Set the position of the first result to retrieve.
      Parameters:
      startPosition - position of the first result, numbered from 0
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the argument is negative

    • getFirstResult

      int getFirstResult()
      The position of the first result the query object was set to retrieve. Returns 0 if setFirstResult was not applied to the query object.
      Returns:
      position of the first result
      Since:
      Java Persistence 2.0

    • setHint

      Query setHint(String hintName, Object value)
      Set a query property or hint. The hints elements may be used to specify query properties and hints. Properties defined by this specification must be observed by the provider. Vendor-specific hints that are not recognized by a provider must be silently ignored. Portable applications should not rely on the standard timeout hint. Depending on the database in use and the locking mechanisms used by the provider, this hint may or may not be observed.
      Parameters:
      hintName - name of the property or hint
      value - value for the property or hint
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the second argument is not valid for the implementation

    • getHints

      Map<String,Object> getHints()
      Get the properties and hints and associated values that are in effect for the query instance.
      Returns:
      query properties and hints
      Since:
      Java Persistence 2.0

    • setParameter

      <T> Query setParameter(Parameter<T> param, T value)
      Bind the value of a Parameter object.
      Parameters:
      param - parameter object
      value - parameter value
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter does not correspond to a parameter of the query
      Since:
      Java Persistence 2.0

    • setParameter

      Query setParameter(Parameter<Calendar> param, Calendar value, TemporalType temporalType)
      Bind an instance of java.util.Calendar to a Parameter object.
      Parameters:
      param - parameter object
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter does not correspond to a parameter of the query
      Since:
      Java Persistence 2.0

    • setParameter

      Query setParameter(Parameter<Date> param, Date value, TemporalType temporalType)
      Bind an instance of java.util.Date to a Parameter object.
      Parameters:
      param - parameter object
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter does not correspond to a parameter of the query
      Since:
      Java Persistence 2.0

    • setParameter

      Query setParameter(String name, Object value)
      Bind an argument value to a named parameter.
      Parameters:
      name - parameter name
      value - parameter value
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter name does not correspond to a parameter of the query or if the argument is of incorrect type

    • setParameter

      Query setParameter(String name, Calendar value, TemporalType temporalType)
      Bind an instance of java.util.Calendar to a named parameter.
      Parameters:
      name - parameter name
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter name does not correspond to a parameter of the query or if the value argument is of incorrect type

    • setParameter

      Query setParameter(String name, Date value, TemporalType temporalType)
      Bind an instance of java.util.Date to a named parameter.
      Parameters:
      name - parameter name
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if the parameter name does not correspond to a parameter of the query or if the value argument is of incorrect type

    • setParameter

      Query setParameter(int position, Object value)
      Bind an argument value to a positional parameter.
      Parameters:
      position - position
      value - parameter value
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if position does not correspond to a positional parameter of the query or if the argument is of incorrect type

    • setParameter

      Query setParameter(int position, Calendar value, TemporalType temporalType)
      Bind an instance of java.util.Calendar to a positional parameter.
      Parameters:
      position - position
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if position does not correspond to a positional parameter of the query or if the value argument is of incorrect type

    • setParameter

      Query setParameter(int position, Date value, TemporalType temporalType)
      Bind an instance of java.util.Date to a positional parameter.
      Parameters:
      position - position
      value - parameter value
      temporalType - temporal type
      Returns:
      the same query instance
      Throws:
      IllegalArgumentException - if position does not correspond to a positional parameter of the query or if the value argument is of incorrect type

    • getParameters

      Set<Parameter<?>> getParameters()
      Get the parameter objects corresponding to the declared parameters of the query. Returns empty set if the query has no parameters. This method is not required to be supported for native queries.
      Returns:
      set of the parameter objects
      Throws:
      IllegalStateException - if invoked on a native query when the implementation does not support this use
      Since:
      Java Persistence 2.0

    • getParameter

      Parameter<?> getParameter(String name)
      Get the parameter object corresponding to the declared parameter of the given name. This method is not required to be supported for native queries.
      Parameters:
      name - parameter name
      Returns:
      parameter object
      Throws:
      IllegalArgumentException - if the parameter of the specified name does not exist
      IllegalStateException - if invoked on a native query when the implementation does not support this use
      Since:
      Java Persistence 2.0

    • getParameter

      <T> Parameter<T> getParameter(String name, Class<T> type)
      Get the parameter object corresponding to the declared parameter of the given name and type. This method is required to be supported for criteria queries only.
      Parameters:
      name - parameter name
      type - type
      Returns:
      parameter object
      Throws:
      IllegalArgumentException - if the parameter of the specified name does not exist or is not assignable to the type
      IllegalStateException - if invoked on a native query or Java Persistence query language query when the implementation does not support this use
      Since:
      Java Persistence 2.0

    • getParameter

      Parameter<?> getParameter(int position)
      Get the parameter object corresponding to the declared positional parameter with the given position. This method is not required to be supported for native queries.
      Parameters:
      position - position
      Returns:
      parameter object
      Throws:
      IllegalArgumentException - if the parameter with the specified position does not exist
      IllegalStateException - if invoked on a native query when the implementation does not support this use
      Since:
      Java Persistence 2.0

    • getParameter

      <T> Parameter<T> getParameter(int position, Class<T> type)
      Get the parameter object corresponding to the declared positional parameter with the given position and type. This method is not required to be supported by the provider.
      Parameters:
      position - position
      type - type
      Returns:
      parameter object
      Throws:
      IllegalArgumentException - if the parameter with the specified position does not exist or is not assignable to the type
      IllegalStateException - if invoked on a native query or Java Persistence query language query when the implementation does not support this use
      Since:
      Java Persistence 2.0

    • isBound

      boolean isBound(Parameter<?> param)
      Return a boolean indicating whether a value has been bound to the parameter.
      Parameters:
      param - parameter object
      Returns:
      boolean indicating whether parameter has been bound
      Since:
      Java Persistence 2.0

    • getParameterValue

      <T> T getParameterValue(Parameter<T> param)
      Return the input value bound to the parameter. (Note that OUT parameters are unbound.)
      Parameters:
      param - parameter object
      Returns:
      parameter value
      Throws:
      IllegalArgumentException - if the parameter is not a parameter of the query
      IllegalStateException - if the parameter has not been been bound
      Since:
      Java Persistence 2.0

    • getParameterValue

      Object getParameterValue(String name)
      Return the input value bound to the named parameter. (Note that OUT parameters are unbound.)
      Parameters:
      name - parameter name
      Returns:
      parameter value
      Throws:
      IllegalStateException - if the parameter has not been been bound
      IllegalArgumentException - if the parameter of the specified name does not exist
      Since:
      Java Persistence 2.0

    • getParameterValue

      Object getParameterValue(int position)
      Return the input value bound to the positional parameter. (Note that OUT parameters are unbound.)
      Parameters:
      position - position
      Returns:
      parameter value
      Throws:
      IllegalStateException - if the parameter has not been been bound
      IllegalArgumentException - if the parameter with the specified position does not exist
      Since:
      Java Persistence 2.0

    • setFlushMode

      Query setFlushMode(FlushModeType flushMode)
      Set the flush mode type to be used for the query execution. The flush mode type applies to the query regardless of the flush mode type in use for the entity manager.
      Parameters:
      flushMode - flush mode
      Returns:
      the same query instance

    • getFlushMode

      FlushModeType getFlushMode()
      Get the flush mode in effect for the query execution. If a flush mode has not been set for the query object, returns the flush mode in effect for the entity manager.
      Returns:
      flush mode
      Since:
      Java Persistence 2.0

    • setLockMode

      Query setLockMode(LockModeType lockMode)
      Set the lock mode type to be used for the query execution.
      Parameters:
      lockMode - lock mode
      Returns:
      the same query instance
      Throws:
      IllegalStateException - if the query is found not to be a Java Persistence query language SELECT query or a CriteriaQuery query
      Since:
      Java Persistence 2.0

    • getLockMode

      LockModeType getLockMode()
      Get the current lock mode for the query. Returns null if a lock mode has not been set on the query object.
      Returns:
      lock mode
      Throws:
      IllegalStateException - if the query is found not to be a Java Persistence query language SELECT query or a Criteria API query
      Since:
      Java Persistence 2.0

    • unwrap

      <T> T unwrap(Class<T> cls)
      Return an object of the specified type to allow access to the provider-specific API. If the provider's query implementation does not support the specified class, the PersistenceException is thrown.
      Parameters:
      cls - the class of the object to be returned. This is normally either the underlying query implementation class or an interface that it implements.
      Returns:
      an instance of the specified class
      Throws:
      PersistenceException - if the provider does not support the call
      Since:
      Java Persistence 2.0