1 files changed, 161 insertions, 0 deletions
diff --git a/storage/ndb/src/old_files/client/odbc/codegen/Code_query_filter.cpp b/storage/ndb/src/old_files/client/odbc/codegen/Code_query_filter.cpp
new file mode 100644
index 00000000000..934a24d182d
--- /dev/null
+++ b/storage/ndb/src/old_files/client/odbc/codegen/Code_query_filter.cpp
@@ -0,0 +1,161 @@
+/* Copyright (C) 2003 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#include "Code_query_filter.hpp"
+#include "Code_query_join.hpp"
+#include "Code_query_scan.hpp"
+#include "Code_root.hpp"
+
+// Plan_query_filter
+
+Plan_query_filter::~Plan_query_filter()
+{
+}
+
+Plan_base*
+Plan_query_filter::analyze(Ctx& ctx, Ctl& ctl)
+{
+    ctx_assert(m_query != 0);
+    m_query->analyze(ctx, ctl);
+    if (! ctx.ok())
+	return 0;
+    ctx_assert(m_pred != 0);
+    m_pred->analyze(ctx, ctl);
+    if (! ctx.ok())
+	return 0;
+    return this;
+}
+
+Exec_base*
+Plan_query_filter::codegen(Ctx& ctx, Ctl& ctl)
+{
+    // generate code for the subquery
+    ctx_assert(m_query != 0);
+    Exec_query* execQuery = static_cast<Exec_query*>(m_query->codegen(ctx, ctl));
+    if (! ctx.ok())
+	return 0;
+    ctx_assert(execQuery != 0);
+    // create code for the predicate based on query code
+    Exec_pred* execPred = 0;
+    ctl.m_execQuery = execQuery;
+    ctx_assert(m_topTable != 0);
+    ctl.m_topTable = m_topTable;
+    ctx_assert(m_pred != 0);
+    execPred = static_cast<Exec_pred*>(m_pred->codegen(ctx, ctl));
+    if (! ctx.ok())
+	return 0;
+    ctx_assert(execPred != 0);
+    ctl.m_topTable = 0;
+    // re-use SqlSpecs from subquery
+    const Exec_query::Code& codeQuery = execQuery->getCode();
+    const SqlSpecs& sqlSpecs = codeQuery.sqlSpecs();
+    Exec_query_filter* exec = new Exec_query_filter(ctl.m_execRoot);
+    ctl.m_execRoot->saveNode(exec);
+    Exec_query_filter::Code& code = *new Exec_query_filter::Code(sqlSpecs);
+    exec->setCode(code);
+    exec->setQuery(execQuery);
+    exec->setPred(execPred);
+    return exec;
+}
+
+void
+Plan_query_filter::print(Ctx& ctx)
+{
+    ctx.print(" [query_filter");
+    Plan_base* a[] = { m_query, m_pred };
+    printList(ctx, a, 2);
+    ctx.print("]");
+}
+
+// Exec_query_filter
+
+Exec_query_filter::Code::~Code()
+{
+}
+
+Exec_query_filter::Data::~Data()
+{
+}
+
+Exec_query_filter::~Exec_query_filter()
+{
+}
+
+void
+Exec_query_filter::alloc(Ctx& ctx, Ctl& ctl)
+{
+    // allocate the subquery
+    ctx_assert(m_query != 0);
+    m_query->alloc(ctx, ctl);
+    if (! ctx.ok())
+	return;
+    // allocate the predicate
+    ctl.m_query = m_query;
+    ctx_assert(m_pred != 0);
+    m_pred->alloc(ctx, ctl);
+    if (! ctx.ok())
+	return;
+    // re-use SqlRow from subquery
+    Exec_query::Data& dataQuery = m_query->getData();
+    Data& data = *new Data(this, dataQuery.sqlRow());
+    setData(data);
+}
+
+void
+Exec_query_filter::execImpl(Ctx& ctx, Ctl& ctl)
+{
+    // execute subquery
+    ctx_assert(m_query != 0);
+    m_query->execute(ctx, ctl);
+}
+
+bool
+Exec_query_filter::fetchImpl(Ctx& ctx, Ctl& ctl)
+{
+    // invoke fetch on subquery until predicate is true
+    ctx_assert(m_query != 0);
+    while (m_query->fetch(ctx, ctl)) {
+	ctx_assert(m_pred != 0);
+	m_pred->evaluate(ctx, ctl);
+	if (! ctx.ok())
+	    return false;
+	if (m_pred->getData().getValue() == Pred_value_true) {
+	    ctl.m_postEval = true;
+	    m_pred->evaluate(ctx, ctl);
+	    ctl.m_postEval = false;
+	    return true;
+	}
+    }
+    return false;
+}
+
+void
+Exec_query_filter::close(Ctx& ctx)
+{
+    ctx_assert(m_query != 0);
+    m_query->close(ctx);
+    ctx_assert(m_pred != 0);
+    m_pred->close(ctx);
+}
+
+void
+Exec_query_filter::print(Ctx& ctx)
+{
+    ctx.print(" [query_filter");
+    Exec_base* a[] = { m_query, m_pred };
+    printList(ctx, a, 2);
+    ctx.print("]");
+}