org.jooq.Results Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* distributed under the License is distributed on an "AS IS" BASIS,
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*
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* -----------------------------------------------------------------------------
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* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq;
import java.sql.SQLException;
import java.util.List;
import org.jooq.conf.Settings;
import org.jooq.conf.ThrowExceptions;
import org.jetbrains.annotations.NotNull;
/**
* A list of {@link Result} and update counts that can be returned by
* {@link ResultQuery#fetchMany()} calls and other calls that produce multiple
* cursors and update counts.
*
* For backwards-compatibility (e.g. with {@link ResultQuery#fetchMany()}), this
* type extends {@link List} containing only the {@link Result}, not the rows,
* update counts, exceptions of interleaved updates. In order to get them all,
* call {@link #resultsOrRows()} upon the results.
*
*
Exceptions
*
* Some databases support raising several errors or exceptions per statement
* batch (e.g. {@link SQLDialect#SQLSERVER}):
*
*
* INSERT INTO t VALUES (1),(2),(3);
* RAISERROR('message 1', 16, 2, 3);
* RAISERROR('message 2', 16, 2, 3);
* SELECT * FROM t;
* RAISERROR('message 3', 16, 2, 3);
*
*
* The above batch will produce:
*
* - An update count (3)
* - 2 exceptions
* - A result set
* - 1 exception
*
*
* By default (or when explicitly specifying {@link ThrowExceptions#THROW_ALL}
* in {@link Settings#getThrowExceptions()}), this particular batch will produce
* a single exception corresponding to "message 1", with additional
* exceptions for "message 2" and "message 3" attached
* to {@link SQLException#getNextException()}, recursively.
*
* When specifying {@link ThrowExceptions#THROW_FIRST}, only
* "message 1" is propagated. When specifying
* {@link ThrowExceptions#THROW_NONE}, then all exceptions are collected as
* results and are made available through {@link #resultsOrRows()} in
* {@link ResultOrRows#exception()}.
*
* @author Lukas Eder
*/
public interface Results extends List>, Attachable {
// ------------------------------------------------------------------------
// XXX: Additional, Results-specific methods
// ------------------------------------------------------------------------
/**
* All the results or update counts in their order as fetched via JDBC.
*
* While {@link #iterator()} and all the other methods inherited from the
* {@link List} API return the {@link Result} objects only, this method also
* includes update counts that may have occurred between two results.
*
* It can be safely assumed that:
*
* result.resultsOrRows()
* .stream()
* .filter(r -> r.result() != null)
* .map(r -> r.result())
* .collect(Collectors.toList())
* .equals(result);
*
*/
@NotNull
List resultsOrRows();
// ------------------------------------------------------------------------
// XXX: Specialisations of Attachable methods
// ------------------------------------------------------------------------
/**
* Attach all results and all of their contained records to a new
* {@link Configuration}.
*
* @param configuration A configuration or null, if you wish to
* detach this Attachable from its previous
* configuration.
*/
@Override
void attach(Configuration configuration);
/**
* Detach all results and all of their contained records from their current
* {@link Configuration}.
*
* This is the same as calling attach(null).
*/
@Override
void detach();
}