Ensure samples comply with March release docs and C++11 (#592)

production/examples/hello/CMakeLists.txt

@@ -47,4 +47,4 @@ set_target_properties(hello PROPERTIES COMPILE_FLAGS ${GAIA_COMPILE_FLAGS})
 set_target_properties(hello PROPERTIES LINK_FLAGS ${GAIA_LINK_FLAGS})
 target_include_directories(hello PRIVATE ${GAIA_INC})
 target_include_directories(hello PRIVATE ${PROJECT_BINARY_DIR})
-target_link_libraries(hello PRIVATE rt pthread gaia)
+target_link_libraries(hello PRIVATE gaia rt pthread)

production/examples/hello/README.md

@@ -18,8 +18,8 @@ select * from hello_fdw.greetings;
 You can also build this code with the `cmake` and `make` tools, by using the included CMakeLists.txt file. Before doing this, you should specify the clang compiler by setting the following variables in your environment:
 
 ```
-export CC=/usr/bin/clang-8
-export CXX=/usr/bin/clang++-8
+export CC=/usr/bin/clang-10
+export CXX=/usr/bin/clang++-10
 ```
 
 The steps for the cmake build are:

production/examples/hello/build.sh

@@ -7,6 +7,6 @@
 
 gaiac -g hello.ddl
 
-gaiat hello.ruleset -output hello_ruleset.cpp -- -I /usr/lib/clang/8/include/ -I /opt/gaia/include/
+gaiat hello.ruleset -output hello_ruleset.cpp -- -I /usr/lib/clang/10/include/ -I /opt/gaia/include/
 
-clang++-8 hello.cpp hello_ruleset.cpp /usr/local/lib/libgaia.so -I /opt/gaia/include -Wl,-rpath,/usr/local/lib -lpthread -o hello
+clang++-10 hello.cpp hello_ruleset.cpp /usr/local/lib/libgaia.so -I /opt/gaia/include -Wl,-rpath,/usr/local/lib -lpthread -o hello

production/examples/hello/hello.ddl

@@ -5,10 +5,10 @@
 
 create table if not exists names
 (
-    name string active
+    name string
 );
 
 create table if not exists greetings
 (
-    greeting string active
+    greeting string
 );

production/examples/incubator/incubator.ddl

@@ -5,21 +5,21 @@
 
 create table if not exists incubator (
       name string,
-      is_on bool active,
-      min_temp float active,
-      max_temp float active
+      is_on bool,
+      min_temp float,
+      max_temp float
 );
 
 create table if not exists sensor (
       name string,
       timestamp uint64,
-      value float active,
+      value float,
       references incubator
 );
 
 create table if not exists actuator (
       name string,
       timestamp uint64,
-      value float active,
+      value float,
       references incubator
 );

production/examples/incubator/incubator.ruleset

@@ -37,9 +37,8 @@ ruleset incubator_ruleset
     }
 
     // Rule 2:  Turn off all the fans if the incubator is powered down.
-    OnUpdate(incubator.is_on)
     {
-        if (!incubator.is_on)
+        if (!@incubator.is_on)
         {
             actuator.value = 0;
             actuator.timestamp = g_timestamp;

production/inc/gaia/direct_access/edc_expressions.hpp

@@ -166,7 +166,7 @@ class expression_t
     template <typename T_value>
     expression_decorator_t<T_class> contains(expression_decorator_t<T_value> predicate);
 
-    template <typename T_value, typename = std::enable_if<std::is_base_of_v<edc_base_t, T_value>>>
+    template <typename T_value, typename = std::enable_if<std::is_base_of<edc_base_t, T_value>::value>>
     expression_decorator_t<T_class> contains(const T_value& object);
 
     expression_decorator_t<T_class> empty();

production/inc/gaia/direct_access/edc_object.hpp

@@ -167,7 +167,7 @@ struct edc_object_t : edc_base_t
     template <typename T_type>
     static edc_vector_t<T_type> to_edc_vector(const flatbuffers::Vector<T_type>* vector_ptr)
     {
-        return edc_vector_t(vector_ptr);
+        return edc_vector_t<T_type>(vector_ptr);
     };
 };