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[#6195] Add DSLContext.fetchByExample(TableRecord)

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This commit is contained in:
lukaseder 2017-05-09 14:14:52 +02:00
parent 11ef2849ff
commit 00aafce1ab
3 changed files with 30 additions and 4 deletions
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14
jOOQ-manual/src/main/resources/org/jooq/web/manual-3.10.xml
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@ -8518,12 +8518,20 @@ book.setAuthorId(1);
book.setPublishedIn(1970);
book.setLanguageId(1);
Result<BookRecord> books =
// Using the explicit condition() API
Result<BookRecord> books1 =
DSL.using(configuration)
.selectFrom(BOOK)
.where(condition(book))
.fetch();]]></java>
</content>
.fetch();
// Using the convenience API on DSLContext
Result<BookRecord> books2 = DSL.using(configuration).fetchByExample(book);]]></java><html>
<p>
The latter API call makes use of the convenience API <reference class="org.jooq.DSLContext" title="DSLContext.fetchByExample(TableRecord)" anchor="#fetchByExample-org.jooq.TableRecord-"/>.
</p>
</html></content>
</section>
</sections>
</section>

12
jOOQ/src/main/java/org/jooq/DSLContext.java
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@ -9249,7 +9249,7 @@ public interface DSLContext extends Scope , AutoCloseable {
<T, R extends Record1<T>> List<T> fetchValues(ResultQuery<R> query) throws DataAccessException;
/**
* Fetch all values in a given {@link Table}'s {@link TableField}
* Fetch all values in a given {@link Table}'s {@link TableField}.
*
* @param field The field for which to fetch all values.
* @return The values. This will never be <code>null</code>.
@ -9257,6 +9257,16 @@ public interface DSLContext extends Scope , AutoCloseable {
*/
<T> List<T> fetchValues(TableField<?, T> field) throws DataAccessException;
/**
* Execute a "Query by Example" (QBE) based on an example record.
*
* @param example The example record
* @return The resulting records matching the example record.
* @throws DataAccessException if something went wrong executing the query
* @see DSL#condition(Record)
*/
<R extends TableRecord<R>> Result<R> fetchByExample(R example) throws DataAccessException;
/**
* Execute a {@link Select} query in the context of this <code>DSLContext</code> and return
* a <code>COUNT(*)</code> value.

8
jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
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@ -37,6 +37,7 @@ package org.jooq.impl;
import static org.jooq.conf.ParamType.INLINED;
import static org.jooq.conf.ParamType.NAMED;
import static org.jooq.conf.ParamType.NAMED_OR_INLINED;
import static org.jooq.impl.DSL.condition;
import static org.jooq.impl.DSL.field;
import static org.jooq.impl.DSL.name;
import static org.jooq.impl.DSL.schema;
@ -3628,6 +3629,13 @@ public class DefaultDSLContext extends AbstractScope implements DSLContext, Seri
return record.value1();
}
@Override
public <R extends TableRecord<R>> Result<R> fetchByExample(R example) {
return selectFrom(example.getTable())
.where(condition(example))
.fetch();
}
@Override
public int fetchCount(Select<?> query) {
return new FetchCount(configuration(), query).fetchOne().value1();