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Query.java
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Query.java
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/**
* Copyright (C) 2016 Czech Technical University in Prague
* <p>
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
* version.
* <p>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.model.query;
import cz.cvut.kbss.jopa.exceptions.NoResultException;
import cz.cvut.kbss.jopa.exceptions.NoUniqueResultException;
import cz.cvut.kbss.jopa.exceptions.OWLPersistenceException;
import cz.cvut.kbss.jopa.exceptions.TransactionRequiredException;
import java.util.List;
import java.util.Set;
public interface Query {
/**
* Execute an update or delete statement.
*
* @throws IllegalStateException if called for a SELECT statement or for a criteria query
* @throws TransactionRequiredException if there is no transaction or the persistence context has not been joined to
* the transaction
* @throws OWLPersistenceException if the query execution exceeds the query timeout value set and the
* transaction is rolled back
*/
void executeUpdate();
/**
* Execute a SELECT query and return the query results as an untyped List.
*
* @return a list of the results
* @throws IllegalStateException if called for a Java Persistence query language UPDATE or DELETE statement
* @throws TransactionRequiredException if a lock mode has been set and there is no transaction
* @throws OWLPersistenceException if the query execution exceeds the query timeout value set and the
* transaction is rolled back
*/
List getResultList();
/**
* Execute a SELECT query that returns a single result.
*
* @return Query result
* @throws NoResultException There is no result
* @throws NoUniqueResultException There are more than one results
*/
Object getSingleResult();
/**
* Set the maximum number of results to retrieve.
*
* @param maxResult maximum number of results
* @return the same query instance
* @throws IllegalArgumentException if the argument is negative
*/
Query setMaxResults(int maxResult);
/**
* The maximum number of results the query object was set to retrieve.
* <p>
* Returns Integer.MAX_VALUE if {@link #setMaxResults(int)} was not applied to the query object.
*
* @return maximum number of results
*/
int getMaxResults();
/**
* Gets the parameter object corresponding to the declared positional parameter with the given position. This method
* is not required to be supported for native queries.
*
* @param position position
* @return parameter object
* @throws IllegalArgumentException If the parameter with the specified position does not exist
*/
Parameter<?> getParameter(int position);
/**
* Gets the parameter object corresponding to the declared parameter of the given name. This method is not required
* to be supported for native queries.
*
* @param name Parameter name
* @return parameter object
* @throws IllegalArgumentException If the parameter of the specified name does not exist
*/
Parameter<?> getParameter(String name);
/**
* Gets 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.
*
* @return set of parameter objects
*/
Set<Parameter<?>> getParameters();
/**
* Returns a boolean indicating whether a value has been bound to the parameter.
*
* @param parameter parameter object
* @return boolean indicating whether parameter has been bound
*/
boolean isBound(Parameter<?> parameter);
/**
* Returns the input value bound to the positional parameter.
*
* @param position position
* @return parameter value
* @throws IllegalStateException If the parameter has not been bound
* @throws IllegalArgumentException If the parameter with the specified position does not exist
*/
Object getParameterValue(int position);
/**
* Returns the input value bound to the named parameter.
*
* @param name parameter name
* @return parameter value
* @throws IllegalStateException If the parameter has not been bound
* @throws IllegalArgumentException If the parameter with the specified name does not exist
*/
Object getParameterValue(String name);
/**
* Returns the input value bound to the parameter.
*
* @param parameter parameter object
* @return parameter value
* @throws IllegalStateException If the parameter has not been bound
* @throws IllegalArgumentException If the parameter is not a parameter of the query
*/
<T> T getParameterValue(Parameter<T> parameter);
/**
* Binds an argument value to a positional parameter.
* <p>
* This version exploits the type of the parameter value and maps it to the corresponding XSD datatype (if it
* exists).
*
* @param position position
* @param value parameter value
* @return this query instance
* @throws IllegalArgumentException If position does not correspond to a positional parameter of the query or if the
* argument is of incorrect type
* @see #setUntypedParameter(int, Object)
*/
Query setParameter(int position, Object value);
/**
* Binds a String argument value to a positional parameter.
*
* @param position position
* @param value parameter value
* @param language language tag for the parameter value
* @return this query instance
* @throws IllegalArgumentException If position does not correspond to a positional parameter of the query or if the
* argument is of incorrect type
*/
Query setParameter(int position, String value, String language);
/**
* Binds an argument value to a named parameter.
* <p>
* This version exploits the type of the parameter value and maps it to the corresponding XSD datatype (if it
* exists).
*
* @param name parameter name
* @param value parameter value
* @return this 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
* @see #setUntypedParameter(String, Object)
*/
Query setParameter(String name, Object value);
/**
* Binds a String argument value to a named parameter.
*
* @param name parameter name
* @param value parameter value
* @param language language tag for the parameter value
* @return this 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
*/
Query setParameter(String name, String value, String language);
/**
* Binds the value of a Parameter object.
* <p>
* This version exploits the type of the parameter value and maps it to the corresponding XSD datatype (if it
* exists).
*
* @param parameter parameter object
* @param value parameter value
* @return this query instance
* @throws IllegalArgumentException If the parameter does not correspond to a parameter of the query
* @see #setUntypedParameter(Parameter, Object)
*/
<T> Query setParameter(Parameter<T> parameter, T value);
/**
* Binds the value of a String Parameter.
*
* @param parameter parameter object
* @param value parameter value
* @param language language tag for the parameter value
* @return this query instance
* @throws IllegalArgumentException If the parameter does not correspond to a parameter of the query
*/
Query setParameter(Parameter<String> parameter, String value, String language);
/**
* Binds an argument value to a positional parameter.
* <p>
* This version does not express the type of the value in the query. Instead, it inserts the value directly into the
* query string. Can be useful e.g. for specifying OFFSET or LIMIT values.
*
* @param position position
* @param value parameter value
* @return this query instance
* @throws IllegalArgumentException If position does not correspond to a positional parameter of the query or if the
* argument is of incorrect type
*/
Query setUntypedParameter(int position, Object value);
/**
* Binds an argument value to a named parameter.
* <p>
* This version does not express the type of the value in the query. Instead, it inserts the value directly into the
* query string. Can be useful e.g. for specifying OFFSET or LIMIT values.
*
* @param name parameter name
* @param value parameter value
* @return this query instance
* @throws IllegalArgumentException If parameter name does not correspond to a parameter of the query or if the
* argument is of incorrect type
*/
Query setUntypedParameter(String name, Object value);
/**
* Binds the value of a Parameter object.
* <p>
* This version does not express the type of the value in the query. Instead, it inserts the value directly into the
* query string. Can be useful e.g. for specifying OFFSET or LIMIT values.
*
* @param parameter parameter object
* @param value parameter value
* @return this query instance
* @throws IllegalArgumentException If the parameter does not correspond to a parameter of the query
*/
<T> Query setUntypedParameter(Parameter<T> parameter, T value);
}