From de3a75127c79a44690b00734cc2602411b2cc955 Mon Sep 17 00:00:00 2001
From: lukaseder <lukas.eder@gmail.com>
Date: Sun, 26 Feb 2017 15:33:40 +0100
Subject: [PATCH] [#1735] Add Setting to indicate that bind values should not
 be cast

---
 .../java/org/jooq/impl/AbstractContext.java   | 21 +++++++++++++++---
 .../resources/xsd/jooq-runtime-3.10.0.xsd     | 22 +++++++++++++++++++
 2 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/jOOQ/src/main/java/org/jooq/impl/AbstractContext.java b/jOOQ/src/main/java/org/jooq/impl/AbstractContext.java
index fb73783f81..3089a2e778 100644
--- a/jOOQ/src/main/java/org/jooq/impl/AbstractContext.java
+++ b/jOOQ/src/main/java/org/jooq/impl/AbstractContext.java
@@ -62,6 +62,7 @@ import org.jooq.Table;
 import org.jooq.VisitContext;
 import org.jooq.VisitListener;
 import org.jooq.VisitListenerProvider;
+import org.jooq.conf.ParamCastMode;
 import org.jooq.conf.ParamType;
 import org.jooq.conf.Settings;
 import org.jooq.conf.SettingsTools;
@@ -93,10 +94,11 @@ abstract class AbstractContext<C extends Context<C>> extends AbstractScope imple
 
     // [#2694] Unified RenderContext and BindContext traversal
     final ParamType                   forcedParamType;
+    final boolean                     castModeOverride;
+    CastMode                          castMode;
     ParamType                         paramType                = ParamType.INDEXED;
     boolean                           qualifySchema            = true;
     boolean                           qualifyCatalog           = true;
-    CastMode                          castMode                 = CastMode.DEFAULT;
 
     AbstractContext(Configuration configuration, PreparedStatement stmt) {
         super(configuration);
@@ -133,9 +135,19 @@ abstract class AbstractContext<C extends Context<C>> extends AbstractScope imple
             this.visitClauses = null;
         }
 
-        forcedParamType = SettingsTools.getStatementType(settings()) == StatementType.STATIC_STATEMENT
+        this.forcedParamType = SettingsTools.getStatementType(settings()) == StatementType.STATIC_STATEMENT
             ? ParamType.INLINED
             : null;
+
+        ParamCastMode m = settings().getParamCastMode();
+        this.castModeOverride =
+              m != ParamCastMode.DEFAULT && m != null;
+        this.castMode =
+              m == ParamCastMode.ALWAYS
+            ? CastMode.ALWAYS
+            : m == ParamCastMode.NEVER
+            ? CastMode.NEVER
+            : CastMode.DEFAULT;
     }
 
     // ------------------------------------------------------------------------
@@ -383,7 +395,7 @@ abstract class AbstractContext<C extends Context<C>> extends AbstractScope imple
                 declareCTE(true);
             }
 
-            else if (castMode() != CastMode.DEFAULT && !internal.generatesCast()) {
+            else if (!castModeOverride && castMode() != CastMode.DEFAULT && !internal.generatesCast()) {
                 CastMode previous = castMode();
 
                 castMode(CastMode.DEFAULT);
@@ -593,6 +605,9 @@ abstract class AbstractContext<C extends Context<C>> extends AbstractScope imple
         sb.append(  "bind index   [");
         sb.append(index);
         sb.append("]");
+        sb.append("\ncast mode    [");
+        sb.append(castMode);
+        sb.append("]");
         sb.append("\ndeclaring    [");
 
         if (declareFields) {
diff --git a/jOOQ/src/main/resources/xsd/jooq-runtime-3.10.0.xsd b/jOOQ/src/main/resources/xsd/jooq-runtime-3.10.0.xsd
index 637843d1a4..826007c445 100644
--- a/jOOQ/src/main/resources/xsd/jooq-runtime-3.10.0.xsd
+++ b/jOOQ/src/main/resources/xsd/jooq-runtime-3.10.0.xsd
@@ -57,6 +57,9 @@
         -->
       <element name="paramType" type="jooq-runtime:ParamType" minOccurs="0" maxOccurs="1" default="INDEXED"/>
 
+      <!-- Whether rendered bind values should be cast to their respective type. -->
+      <element name="paramCastMode" type="jooq-runtime:ParamCastMode" minOccurs="0" maxOccurs="1" default="DEFAULT"/>
+
       <!-- The type of statement that is to be executed -->
       <element name="statementType" type="jooq-runtime:StatementType" minOccurs="0" maxOccurs="1" default="PREPARED_STATEMENT"/>
 
@@ -208,6 +211,25 @@
     </restriction>
   </simpleType>
 
+  <simpleType name="ParamCastMode">
+    <restriction base="string">
+
+      <!-- Bind values are always cast to their respective type. -->
+      <enumeration value="ALWAYS"/>
+
+      <!-- Bind values are cast to their respective type when needed.
+
+           Some databases are not able to delay bind value type inference until the execution of a statement.
+           They will either reject the value of unknown type, or assume a possibly inappropriate type. In these
+           cases, jOOQ will generate an explicit cast(? as datatype) expression around the bind value to help
+           the query parser do its job. The exact behaviour of this mode is undefined and subject to change. -->
+      <enumeration value="DEFAULT"/>
+
+      <!-- Bind values are never cast to their respective type. -->
+      <enumeration value="NEVER"/>
+    </restriction>
+  </simpleType>
+
   <simpleType name="StatementType">
     <restriction base="string">