public void LoadQuery(YamsterModelQuery query)
{
RequireNotDisposed();
bool succeeded = false;
try
{
Query = query;
CompiledFunc = null;
if (query != null)
{
CompiledFunc = YqlCompiler.Compile(query);
}
Invalidate();
succeeded = true;
}
finally
{
if (!succeeded)
{
Query = null;
CompiledFunc = null;
Invalidate();
}
}
}
public virtual void Dispose()
{
if (!IsDisposed)
{
Invalidate();
Query = null;
yamsterCache = null;
}
}
internal static Func <YqlExecutionContext, bool> Compile(YamsterModelQuery query)
{
var compiler = new YqlCompiler(query);
var compiledQuery = compiler.CoerceTo(compiler.CompileNode(query.FilterNode), typeof(bool),
"Expecting a boolean expression");
var filterExpression = Expression.Lambda <Func <YqlExecutionContext, bool> >(
compiledQuery.Expression, compiler.ExecutionContextParameter);
var compiledFunc = filterExpression.Compile();
return(compiledFunc);
}
public virtual void CopyFrom(YamsterModelQuery source)
{
this.Title = source.Title;
this.FilterNode = YqlNode.CloneIfNotNull(source.FilterNode);
}
private YqlCompiler(YamsterModelQuery query)
{
this.ModelType = query.ModelType;
ExecutionContextParameter = Expression.Parameter(typeof(YqlExecutionContext), "context");
}
