From 395ac62f477736210e608dc1360110e089c7670d Mon Sep 17 00:00:00 2001
From: helge <helge@e4a50df8-12e2-0310-a44c-efbce7f8a7e3>
Date: Mon, 3 Oct 2005 19:18:50 +0000
Subject: [PATCH] improved qualifier=>predicate conversion

git-svn-id: http://svn.opengroupware.org/SOPE/trunk@1148 e4a50df8-12e2-0310-a44c-efbce7f8a7e3
---
 sope-core/EOCoreData/ChangeLog                |  4 ++
 .../EOKeyComparisonQualifier+CoreData.m       | 18 ++++++--
 .../EOCoreData/EOKeyValueQualifier+CoreData.m | 22 ++++++++--
 sope-core/EOCoreData/EOQualifier+CoreData.h   |  4 ++
 sope-core/EOCoreData/EOQualifier+CoreData.m   | 42 +++++++++++++++++++
 sope-core/EOCoreData/Version                  |  2 +-
 6 files changed, 85 insertions(+), 7 deletions(-)

diff --git a/sope-core/EOCoreData/ChangeLog b/sope-core/EOCoreData/ChangeLog
index 6d9e8977..d5095565 100644
--- a/sope-core/EOCoreData/ChangeLog
+++ b/sope-core/EOCoreData/ChangeLog
@@ -1,3 +1,7 @@
+2005-10-03  Helge Hess  <helge.hess@opengroupware.org>
+
+	* improved qualifier=>predicate conversion support (v4.5.10)
+
 2005-08-23  Helge Hess  <helge.hess@opengroupware.org>
 
 	* v4.5.9
diff --git a/sope-core/EOCoreData/EOKeyComparisonQualifier+CoreData.m b/sope-core/EOCoreData/EOKeyComparisonQualifier+CoreData.m
index 15c62c9c..1c37d429 100644
--- a/sope-core/EOCoreData/EOKeyComparisonQualifier+CoreData.m
+++ b/sope-core/EOCoreData/EOKeyComparisonQualifier+CoreData.m
@@ -38,9 +38,21 @@
 }
 
 - (NSPredicate *)asPredicate {
-  NSLog(@"TODO(%s): implement me for class %@!", __PRETTY_FUNCTION__,
-	NSStringFromClass([self class]));
-  return nil;
+  NSExpression *lhs, *rhs;
+  id  tmp;
+
+  tmp = [self leftKey];
+  lhs = [tmp isKindOfClass:[EOQualifierVariable class]]
+    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
+    : [NSExpression expressionForKeyPath:tmp];
+  
+  tmp = [self rightKey];
+  rhs = [tmp isKindOfClass:[EOQualifierVariable class]]
+    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
+    : [NSExpression expressionForKeyPath:tmp];
+  
+  return [self predicateWithLeftExpression:lhs rightExpression:rhs
+	       eoSelector:[self selector]];
 }
 
 /* CoreData compatibility */
diff --git a/sope-core/EOCoreData/EOKeyValueQualifier+CoreData.m b/sope-core/EOCoreData/EOKeyValueQualifier+CoreData.m
index 5c621987..8562e65b 100644
--- a/sope-core/EOCoreData/EOKeyValueQualifier+CoreData.m
+++ b/sope-core/EOCoreData/EOKeyValueQualifier+CoreData.m
@@ -39,9 +39,25 @@
 }
 
 - (NSPredicate *)asPredicate {
-  NSLog(@"TODO(%s): implement me for class %@!", __PRETTY_FUNCTION__,
-	NSStringFromClass([self class]));
-  return nil;
+  /*
+    EOKeyValueQualifier has a key/value path expression on the left side
+    and a constant value expression on the right side.
+  */
+  NSExpression *lhs, *rhs;
+  id tmp;
+  
+  tmp = [self key];
+  lhs = [tmp isKindOfClass:[EOQualifierVariable class]]
+    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
+    : [NSExpression expressionForKeyPath:tmp];
+  
+  tmp = [self value];
+  rhs = [tmp isKindOfClass:[EOQualifierVariable class]]
+    ? [NSExpression expressionForVariable:[(EOQualifierVariable *)tmp key]]
+    : [NSExpression expressionForConstantValue:tmp];
+  
+  return [self predicateWithLeftExpression:lhs rightExpression:rhs
+	       eoSelector:[self selector]];
 }
 
 /* CoreData compatibility */
diff --git a/sope-core/EOCoreData/EOQualifier+CoreData.h b/sope-core/EOCoreData/EOQualifier+CoreData.h
index 43e10161..79c48142 100644
--- a/sope-core/EOCoreData/EOQualifier+CoreData.h
+++ b/sope-core/EOCoreData/EOQualifier+CoreData.h
@@ -47,6 +47,10 @@
 + (SEL)eoSelectorForForComparisonPredicate:(NSComparisonPredicate *)_p;
 + (NSPredicateOperatorType)predicateOperatorTypeForEOSelector:(SEL)_sel;
 
+- (NSPredicate *)predicateWithLeftExpression:(NSExpression *)_lhs
+  rightExpression:(NSExpression *)_rhs
+  eoSelector:(SEL)_selector;
+
 /* CoreData compatibility */
 
 + (NSPredicate *)andPredicateWithSubpredicates:(NSArray *)_sub;
diff --git a/sope-core/EOCoreData/EOQualifier+CoreData.m b/sope-core/EOCoreData/EOQualifier+CoreData.m
index 6d255c97..f39d5ac9 100644
--- a/sope-core/EOCoreData/EOQualifier+CoreData.m
+++ b/sope-core/EOCoreData/EOQualifier+CoreData.m
@@ -138,6 +138,40 @@
   return sel;
 }
 
+- (NSPredicate *)predicateWithLeftExpression:(NSExpression *)_lhs
+  rightExpression:(NSExpression *)_rhs
+  eoSelector:(SEL)_selector
+{
+  // TODO: create non-custom predicate if possible
+  NSComparisonPredicateModifier pmod;
+  NSPredicateOperatorType       ptype;
+  unsigned popts;
+
+  if (_selector == NULL) {
+    NSLog(@"ERROR(0x%08X/%@): missing selector for predicate construction: %@",
+	  self, NSStringFromClass([self class]), self);
+    return nil;
+  }
+  
+  ptype = [EOQualifier predicateOperatorTypeForEOSelector:_selector];
+  
+  if (ptype == NSCustomSelectorPredicateOperatorType) {
+    return [NSComparisonPredicate predicateWithLeftExpression:_lhs
+				  rightExpression:_rhs
+				  customSelector:_selector];
+  }
+  
+  pmod  = NSDirectPredicateModifier;
+  popts = 0;
+  
+  if (SEL_EQ(_selector, EOQualifierOperatorCaseInsensitiveLike))
+    popts = NSCaseInsensitivePredicateOption;
+  
+  return [NSComparisonPredicate predicateWithLeftExpression:_lhs
+				rightExpression:_rhs
+				modifier:pmod type:ptype options:popts];
+}
+
 + (EOQualifier *)qualifierForPredicate:(NSPredicate *)_predicate {
   if (_predicate == nil)
     return nil;
@@ -183,4 +217,12 @@
 				[_predicate asPredicate]];
 }
 
+- (NSPredicate *)predicateWithSubstitutionVariables:(NSDictionary *)_vars {
+  return [[self asPredicate] predicateWithSubstitutionVariables:_vars];
+}
+
+- (NSString *)predicateFormat {
+  return [[self asPredicate] predicateFormat];
+}
+
 @end /* EOQualifier(CoreData) */
diff --git a/sope-core/EOCoreData/Version b/sope-core/EOCoreData/Version
index f7255071..5e823793 100644
--- a/sope-core/EOCoreData/Version
+++ b/sope-core/EOCoreData/Version
@@ -1,3 +1,3 @@
 # version file
 
-SUBMINOR_VERSION:=9
+SUBMINOR_VERSION:=10
-- 
2.39.5