[jOOQ/jOOQ#12465] Move PRODUCT to API generator
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Lukas Eder
parent
fa286e821f
commit
efd74633cb
@ -19955,6 +19955,48 @@ public class DSL {
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return new Min(field, true);
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}
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/**
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* The <code>PRODUCT</code> function.
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* <p>
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* Get the sum over a numeric field: product(distinct field).
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* <p>
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* Few dialects currently support multiplicative aggregation natively. jOOQ
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* emulates this using <code>exp(sum(log(arg)))</code> for strictly positive
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* numbers, and does some additional handling for zero and negative numbers.
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* <p>
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* Note that this implementation may introduce rounding errors, even for
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* integer multiplication.
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* <p>
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* More information here: <a href=
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* "https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql">https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql</a>.
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*/
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@NotNull
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@Support({ CUBRID, DERBY, FIREBIRD, H2, HSQLDB, MARIADB, MYSQL, POSTGRES, YUGABYTE })
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public static AggregateFunction<BigDecimal> product(Field<? extends Number> field) {
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return new Product(field, false);
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}
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/**
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* The <code>PRODUCT_DISTINCT</code> function.
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* <p>
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* Get the sum over a numeric field: product(distinct field).
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* <p>
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* Few dialects currently support multiplicative aggregation natively. jOOQ
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* emulates this using <code>exp(sum(log(arg)))</code> for strictly positive
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* numbers, and does some additional handling for zero and negative numbers.
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* <p>
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* Note that this implementation may introduce rounding errors, even for
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* integer multiplication.
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* <p>
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* More information here: <a href=
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* "https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql">https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql</a>.
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*/
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@NotNull
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@Support({ CUBRID, DERBY, FIREBIRD, H2, HSQLDB, MARIADB, MYSQL, POSTGRES, YUGABYTE })
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public static AggregateFunction<BigDecimal> productDistinct(Field<? extends Number> field) {
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return new Product(field, true);
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}
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/**
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* The <code>REGR_AVGX</code> function.
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* <p>
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@ -25066,44 +25108,6 @@ public class DSL {
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/**
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* Get the product over a numeric field: product(field).
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* <p>
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* No database currently supports multiplicative aggregation natively. jOOQ
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* emulates this using <code>exp(sum(log(arg)))</code> for strictly positive
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* numbers, and does some additional handling for zero and negative numbers.
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* <p>
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* Note that this implementation may introduce rounding errors, even for
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* integer multiplication.
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* <p>
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* More information here: <a href=
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* "https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql">https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql</a>.
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*/
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@NotNull
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@Support({ CUBRID, DERBY, FIREBIRD, H2, HSQLDB, MARIADB, MYSQL, POSTGRES, YUGABYTE })
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public static AggregateFunction<BigDecimal> product(Field<? extends Number> field) {
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return new Product(false, Tools.nullSafe(field));
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}
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/**
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* Get the sum over a numeric field: product(distinct field).
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* <p>
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* No database currently supports multiplicative aggregation natively. jOOQ
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* emulates this using <code>exp(sum(log(arg)))</code> for strictly positive
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* numbers, and does some additional handling for zero and negative numbers.
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* <p>
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* Note that this implementation may introduce rounding errors, even for
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* integer multiplication.
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* <p>
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* More information here: <a href=
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* "https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql">https://blog.jooq.org/2018/09/21/how-to-write-a-multiplication-aggregate-function-in-sql</a>.
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*/
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@NotNull
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@Support({ CUBRID, DERBY, FIREBIRD, H2, HSQLDB, MARIADB, MYSQL, POSTGRES, YUGABYTE })
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public static AggregateFunction<BigDecimal> productDistinct(Field<? extends Number> field) {
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return new Product(true, Tools.nullSafe(field));
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}
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/**
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* The <code>mode(field)</code> aggregate function.
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@ -37,38 +37,56 @@
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*/
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package org.jooq.impl;
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// ...
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// ...
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// ...
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import static org.jooq.impl.DSL.aggregate;
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import static org.jooq.impl.DSL.aggregateDistinct;
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import static org.jooq.impl.DSL.choose;
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import static org.jooq.impl.DSL.inline;
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import static org.jooq.impl.DSL.one;
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import static org.jooq.impl.DSL.when;
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import static org.jooq.impl.DSL.zero;
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import static org.jooq.impl.Internal.imul;
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import static org.jooq.impl.Names.N_MUL;
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import static org.jooq.impl.Names.N_PRODUCT;
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import static org.jooq.impl.SQLDataType.NUMERIC;
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import static org.jooq.impl.Tools.EMPTY_FIELD;
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import static org.jooq.impl.DSL.*;
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import static org.jooq.impl.Internal.*;
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import static org.jooq.impl.Keywords.*;
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import static org.jooq.impl.Names.*;
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import static org.jooq.impl.SQLDataType.*;
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import static org.jooq.impl.Tools.*;
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import static org.jooq.impl.Tools.BooleanDataKey.*;
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import static org.jooq.impl.Tools.DataExtendedKey.*;
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import static org.jooq.impl.Tools.DataKey.*;
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import static org.jooq.SQLDialect.*;
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import org.jooq.*;
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import org.jooq.Record;
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import org.jooq.conf.*;
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import org.jooq.impl.*;
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import org.jooq.tools.*;
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import java.util.*;
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import java.util.function.*;
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import java.util.stream.*;
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import java.math.BigDecimal;
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import org.jooq.Context;
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import org.jooq.Field;
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import org.jooq.Name;
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// ...
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/**
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* @author Lukas Eder
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* The <code>PRODUCT</code> statement.
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*/
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final class Product extends AbstractAggregateFunction<BigDecimal> {
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@SuppressWarnings({ "rawtypes", "unused" })
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final class Product
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extends
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AbstractAggregateFunction<BigDecimal>
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{
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Product(boolean distinct, Field<?>... arguments) {
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super(distinct, N_PRODUCT, NUMERIC, arguments);
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Product(
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Field<? extends Number> field,
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boolean productDistinct
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) {
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super(
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productDistinct,
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N_PRODUCT,
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NUMERIC,
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nullSafeNotNull(field, INTEGER)
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);
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}
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// -------------------------------------------------------------------------
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// XXX: QueryPart API
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// -------------------------------------------------------------------------
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@Override
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public final void accept(Context<?> ctx) {
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switch (ctx.family()) {
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@ -105,7 +123,7 @@ final class Product extends AbstractAggregateFunction<BigDecimal> {
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private final void acceptEmulation(Context<?> ctx) {
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@SuppressWarnings({ "unchecked", "rawtypes" })
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@SuppressWarnings({ "unchecked" })
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final Field<Integer> f = (Field) DSL.field("{0}", arguments.get(0).getDataType(), arguments.get(0));
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final Field<Integer> negatives = DSL.when(f.lt(zero()), inline(-1));
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@ -150,4 +168,6 @@ final class Product extends AbstractAggregateFunction<BigDecimal> {
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DSL.exp(logarithmsSum)
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));
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}
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}
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