[tracker] libtracker-data: Rename internal variable

[Carlos Garnacho <carlosg src gnome org>]

commit 9fb68b99067794dffd7b314a09456378e02cc706
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Nov 19 23:29:44 2016 +0100

    libtracker-data: Rename internal variable
    
    We are actually requesting the context to resolve variables to the
    binding sql expression, so rename to a more apt need_binding_expression.

 src/libtracker-data/tracker-sparql-expression.vala |    2 +-
 src/libtracker-data/tracker-sparql-pattern.vala    |    4 ++--
 src/libtracker-data/tracker-sparql-query.vala      |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/libtracker-data/tracker-sparql-expression.vala 
b/src/libtracker-data/tracker-sparql-expression.vala
index 210fdff..d1b456d 100644
--- a/src/libtracker-data/tracker-sparql-expression.vala
+++ b/src/libtracker-data/tracker-sparql-expression.vala
@@ -1150,7 +1150,7 @@ class Tracker.Sparql.Expression : Object {
                        string variable_name = get_last_string ().substring (1);
                        var variable = context.get_variable (variable_name);
 
-                       if (context.in_bind && variable.binding != null) {
+                       if (context.need_binding_expression && variable.binding != null) {
                                sql.append (variable.binding.sql_expression);
                        } else {
                                sql.append (variable.sql_expression);
diff --git a/src/libtracker-data/tracker-sparql-pattern.vala b/src/libtracker-data/tracker-sparql-pattern.vala
index 4511c02..6a67679 100644
--- a/src/libtracker-data/tracker-sparql-pattern.vala
+++ b/src/libtracker-data/tracker-sparql-pattern.vala
@@ -1111,9 +1111,9 @@ class Tracker.Sparql.Pattern : Object {
                                // We only need the binding sql expression when
                                // we are not in a group graph pattern, both
                                // cases are handled differently below.
-                               context.in_bind = !in_group_graph_pattern;
+                               context.need_binding_expression = !in_group_graph_pattern;
                                expression.translate_expression (bind_sql);
-                               context.in_bind = false;
+                               context.need_binding_expression = false;
                                binding.sql_expression = bind_sql.str;
 
                                expect (SparqlTokenType.AS);
diff --git a/src/libtracker-data/tracker-sparql-query.vala b/src/libtracker-data/tracker-sparql-query.vala
index 34504c1..9a9eac8 100644
--- a/src/libtracker-data/tracker-sparql-query.vala
+++ b/src/libtracker-data/tracker-sparql-query.vala
@@ -120,7 +120,7 @@ namespace Tracker.Sparql {
                public HashTable<Variable,PredicateVariable> predicate_variable_map;
 
                public bool scalar_subquery;
-               public bool in_bind;
+               public bool need_binding_expression;
 
                public Context (Query query, Context? parent_context = null) {
                        this.query = query;