org.jooq.WindowSpecificationRowsAndStep Maven / Gradle / Ivy
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* 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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* database integrations.
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package org.jooq;
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import static org.jooq.SQLDialect.FIREBIRD;
import static org.jooq.SQLDialect.H2;
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import static org.jooq.SQLDialect.MARIADB;
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import static org.jooq.SQLDialect.MYSQL;
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import static org.jooq.SQLDialect.POSTGRES;
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import static org.jooq.SQLDialect.SQLITE;
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import static org.jooq.SQLDialect.YUGABYTEDB;
import org.jetbrains.annotations.NotNull;
/**
* An intermediate step in the construction of a {@link WindowSpecification}.
*
* Example:
* WindowSpecification spec =
* DSL.partitionBy(BOOK.AUTHOR_ID)
* .orderBy(BOOK.ID)
* .rowsBetweenUnboundedPreceding()
* .andCurrentRow();
*
*
*
Referencing XYZ*Step types directly from client code
*
* It is usually not recommended to reference any XYZ*Step types
* directly from client code, or assign them to local variables. When writing
* dynamic SQL, creating a statement's components dynamically, and passing them
* to the DSL API statically is usually a better choice. See the manual's
* section about dynamic SQL for details: https://www.jooq.org/doc/latest/manual/sql-building/dynamic-sql.
*
* Drawbacks of referencing the XYZ*Step types directly:
*
* - They're operating on mutable implementations (as of jOOQ 3.x)
* - They're less composable and not easy to get right when dynamic SQL gets
* complex
* - They're less readable
* - They might have binary incompatible changes between minor releases
*
*
* @author Lukas Eder
*/
public interface WindowSpecificationRowsAndStep {
/**
* Add a … AND UNBOUNDED PRECEDING frame clause to the window
* specification.
*/
@NotNull
@Support({ FIREBIRD, H2, MARIADB, MYSQL, POSTGRES, SQLITE, YUGABYTEDB })
WindowSpecificationExcludeStep andUnboundedPreceding();
/**
* Add a … AND [number] PRECEDING frame clause to the window
* specification.
*/
@NotNull
@Support({ FIREBIRD, H2, MARIADB, MYSQL, POSTGRES, SQLITE, YUGABYTEDB })
WindowSpecificationExcludeStep andPreceding(int number);
/**
* Add a … AND CURRENT ROW frame clause to the window
* specification.
*/
@NotNull
@Support({ FIREBIRD, H2, MARIADB, MYSQL, POSTGRES, SQLITE, YUGABYTEDB })
WindowSpecificationExcludeStep andCurrentRow();
/**
* Add a … AND UNBOUNDED FOLLOWING frame clause to the window
* specification.
*/
@NotNull
@Support({ FIREBIRD, H2, MARIADB, MYSQL, POSTGRES, SQLITE, YUGABYTEDB })
WindowSpecificationExcludeStep andUnboundedFollowing();
/**
* Add a … AND [number] FOLLOWING frame clause to the window
* specification.
*/
@NotNull
@Support({ FIREBIRD, H2, MARIADB, MYSQL, POSTGRES, SQLITE, YUGABYTEDB })
WindowSpecificationExcludeStep andFollowing(int number);
}