Added script to validate XML Query/Schema Language files

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@10544 201d5d3c-b55e-5fd7-737f-ddc643e51545

tools/dbxml_validator/xml_colassign.xsd

@@ -0,0 +1,90 @@
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xml:lang="en">
+
+    <xsd:annotation>
+	<xsd:documentation>
+	    Add a ColumnAssignmentType to the schema definition for SQL data-change
+	    statements in XML Query Language in XpressEngine.
+
+	    XpressEngine is an open source framework for creating web sites.
+	    http://xpressengine.org/
+
+	    Author: Adrian Constantin, Arnia Software (adrian.constantin@arnia.ro)
+	    Date:   08 mar 2012
+
+	    Include graph:
+
+	    +-- xml_create_table.xsd
+	    +-- xml_query.xsd
+		+-- xml_datachange.xsd
+		    +-- xml_colassign.xsd			*****
+			+-- xml_insert_generic.xsd
+			|   +-- xml_insert.xsd
+			|   +-- xml_insert_select.xsd
+			|
+			+-- xml_select.xsd
+			+-- xml_update.xsd
+			+-- xml_delete.xsd
+
+	    The ColumnAssignamentType allows a column to be assigned a value, to be
+	    used to describe INSERT and UPDATE statements.
+	</xsd:documentation>
+    </xsd:annotation>
+
+    <!--
+	The main schema definition for the SQL data-change statements in XML
+	Query language (this in turn includes the generic schema definition
+	for the language).
+    -->
+    <xsd:include schemaLocation="xml_datachange.xsd" />
+
+    <xsd:complexType name="BaseColumnAssignamentType">
+	<xsd:annotation>
+	    <xsd:documentation>
+		Basic type for a column assignament in an
+		UPDATE/INSERT.
+
+		Maybe an expression sub-query could be allowed here as the new
+		column value.
+	    </xsd:documentation>
+	</xsd:annotation>
+
+	<xsd:complexContent>
+	    <xsd:restriction base="ColumnType">
+		<xsd:attribute name="name" type="xsd:string" use="required" />
+		<xsd:attribute name="alias" use="prohibited" />
+		<xsd:attribute name="click_count" use="prohibited" />
+	    </xsd:restriction>
+	</xsd:complexContent>
+    </xsd:complexType>
+
+    <xsd:complexType name="ColumnAssignamentType">
+	<xsd:annotation>
+	    <xsd:documentation>
+		A column in a column assignament for an SQL UPDATE/INSERT 
+		statement.
+
+		"var" attribute is optional, if omitted the column name is
+		the variable name.
+	    </xsd:documentation>
+	</xsd:annotation>
+
+	<xsd:complexContent>
+	    <xsd:extension base="BaseColumnAssignamentType">
+		<xsd:attribute name="var" type="xsd:string" use="optional"  />
+		<xsd:attributeGroup ref="argumentAttrs" />
+	    </xsd:extension>
+	</xsd:complexContent>
+    </xsd:complexType>
+
+    <xsd:complexType name="ColumnsAssignamentType">
+	<xsd:annotation>
+	    <xsd:documentation>
+		The list of column assignaments in an INSERT/UPDATE statement.
+	    </xsd:documentation>
+	</xsd:annotation>
+
+	<xsd:sequence>
+	    <xsd:element name="column" type="ColumnAssignamentType" minOccurs="1" maxOccurs="unbounded" />
+	</xsd:sequence>
+    </xsd:complexType>
+</xsd:schema>