[jOOQ/jOOQ#9879] Added a GeneratorContext

Generators may require access to a Configuration, so they should be
Function<Generator, Field<T>>, not Supplier<Field<T>>

Fixed issues and added many more tests for virtual client side computed
columns.

jOOQ/src/main/java/org/jooq/Generator.java

@@ -38,11 +38,11 @@
 package org.jooq;
 
 import java.io.Serializable;
-import java.util.function.Supplier;
+import java.util.function.Function;
 
 /**
  * A generator can be used with {@link DataType#generatedAlwaysAs(Generator)} to
  * implement dynamic, client side computed columns.
  */
 @FunctionalInterface
-public interface Generator<T> extends Supplier<Field<T>>, Serializable {}
+public interface Generator<T> extends Function<GeneratorContext, Field<T>>, Serializable {}

jOOQ/src/main/java/org/jooq/GeneratorContext.java

@@ -0,0 +1,44 @@
+/*
+ * 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
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Other licenses:
+ * -----------------------------------------------------------------------------
+ * Commercial licenses for this work are available. These replace the above
+ * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
+ * database integrations.
+ *
+ * For more information, please visit: http://www.jooq.org/licenses
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+package org.jooq;
+
+/**
+ * A generator context is an argument object that is passed to a
+ * {@link Generator} when generating client side computed columns.
+ */
+public interface GeneratorContext extends Scope {}

jOOQ/src/main/java/org/jooq/impl/AbstractDataType.java

@@ -42,7 +42,6 @@ import static org.jooq.SQLDialect.DERBY;
 import static org.jooq.SQLDialect.FIREBIRD;
 // ...
 // ...
-import static org.jooq.impl.DSL.unquotedName;
 import static org.jooq.impl.Internal.arrayType;
 import static org.jooq.impl.QOM.GenerationOption.STORED;
 import static org.jooq.impl.QOM.GenerationOption.VIRTUAL;
@@ -110,7 +109,6 @@ import org.jooq.impl.QOM.UEmpty;
 import org.jooq.types.Interval;
 import org.jooq.types.UNumber;
 
-import jakarta.persistence.GenerationType;
 // ...
 
 /**
@@ -192,7 +190,7 @@ implements
 
     @Override
     public final DataType<T> generatedAlwaysAs(Field<T> generatedAlwaysAsValue) {
-        return generatedAlwaysAs(() -> generatedAlwaysAsValue);
+        return generatedAlwaysAs(ctx -> generatedAlwaysAsValue);
     }
 
     @Override
@@ -201,7 +199,7 @@ implements
     @Override
     public final Field<T> generatedAlwaysAs() {
         Generator<T> s = generatedAlwaysAsGenerator();
-        return s == null ? null : s.get();
+        return s == null ? null : s.apply(new DefaultGeneratorContext(CONFIG));
     }
 
     @Override

jOOQ/src/main/java/org/jooq/impl/DefaultGeneratorContext.java

@@ -0,0 +1,51 @@
+/*
+ * 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
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Other licenses:
+ * -----------------------------------------------------------------------------
+ * Commercial licenses for this work are available. These replace the above
+ * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
+ * database integrations.
+ *
+ * For more information, please visit: http://www.jooq.org/licenses
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+package org.jooq.impl;
+
+import org.jooq.Configuration;
+import org.jooq.GeneratorContext;
+
+/**
+ * @author Lukas Eder
+ */
+final class DefaultGeneratorContext extends AbstractScope implements GeneratorContext {
+
+    DefaultGeneratorContext(Configuration configuration) {
+        super(configuration);
+    }
+}

jOOQ/src/main/java/org/jooq/impl/TableAlias.java

@@ -43,8 +43,10 @@ import java.util.function.Predicate;
 
 import org.jooq.Clause;
 import org.jooq.Context;
+import org.jooq.DataType;
 import org.jooq.Field;
 import org.jooq.ForeignKey;
+import org.jooq.Generator;
 import org.jooq.Name;
 import org.jooq.QueryPart;
 import org.jooq.Record;
@@ -54,6 +56,8 @@ import org.jooq.TableField;
 // ...
 import org.jooq.UniqueKey;
 
+import org.jetbrains.annotations.NotNull;
+
 /**
  * @author Lukas Eder
  */
@@ -88,12 +92,25 @@ final class TableAlias<R extends Record> extends AbstractTable<R> implements QOM
         List<Field<?>> result = Tools.map(this.alias.wrapped().fieldsRow().fields(), (f, i) -> new TableFieldImpl(
               alias.fieldAliases != null && alias.fieldAliases.length > i
             ? alias.fieldAliases[i]
-            : f.getUnqualifiedName(), f.getDataType(), this, f.getCommentPart(), f.getBinding()
+            : f.getUnqualifiedName(), removeGenerator(f.getDataType()), this, f.getCommentPart(), f.getBinding()
         ));
 
         return new FieldsImpl<>(result);
     }
 
+    static final <T> DataType<T> removeGenerator(DataType<T> dataType) {
+
+
+
+
+
+
+
+
+
+        return dataType;
+    }
+
     /**
      * Get the aliased table wrapped by this table.
      */

jOOQ/src/main/java/org/jooq/impl/TableFieldImpl.java

@@ -45,6 +45,7 @@ import static org.jooq.Clause.FIELD_REFERENCE;
 import static org.jooq.impl.DefaultMetaProvider.meta;
 import static org.jooq.impl.Tools.BooleanDataKey.DATA_OMIT_CLAUSE_EVENT_EMISSION;
 
+import java.util.function.Function;
 import java.util.stream.Stream;
 
 import org.jooq.Binding;
@@ -52,6 +53,8 @@ import org.jooq.Clause;
 import org.jooq.Comment;
 import org.jooq.Context;
 import org.jooq.DataType;
+import org.jooq.Field;
+import org.jooq.Generator;
 import org.jooq.Name;
 import org.jooq.Record;
 import org.jooq.RowId;
@@ -60,6 +63,8 @@ import org.jooq.TableField;
 import org.jooq.impl.QOM.UNotYetImplemented;
 import org.jooq.tools.StringUtils;
 
+import org.jetbrains.annotations.NotNull;
+
 /**
  * A common base type for table fields.
  *
@@ -95,6 +100,11 @@ class TableFieldImpl<R extends Record, T> extends AbstractField<T> implements Ta
     // XXX: QueryPart API
     // ------------------------------------------------------------------------
 
+    @Override
+    public boolean declaresFields() {
+        return  super.declaresFields();
+    }
+
     @Override
     public final Clause[] clauses(Context<?> ctx) {
         return CLAUSES;
@@ -117,6 +127,12 @@ class TableFieldImpl<R extends Record, T> extends AbstractField<T> implements Ta
 
 
 
+
+
+
+
+
+