diff --git a/asterix-external-data/src/main/resources/schema/library.xsd b/asterix-external-data/src/main/resources/schema/library.xsd
index f58175a..00f71f5 100644
--- a/asterix-external-data/src/main/resources/schema/library.xsd
+++ b/asterix-external-data/src/main/resources/schema/library.xsd
@@ -9,9 +9,7 @@
 	<xs:element name="return_type" type="xs:string" />
 	<xs:element name="function_type" type="xs:string" />
 	<xs:element name="definition" type="xs:string" />
-
 	<xs:element name="factory_class" type="xs:string" />
-	<xs:element name="adaptor_type" type="xs:string" />
 
 
 	<!-- definition of complex elements -->
@@ -40,7 +38,6 @@
 			<xs:sequence>
 				<xs:element ref="lib:name" />
 				<xs:element ref="lib:factory_class" />
-				<xs:element ref="lib:adaptor_type" />
 			</xs:sequence>
 		</xs:complexType>
 	</xs:element>
@@ -58,7 +55,7 @@
 			<xs:sequence>
 				<xs:element ref="lib:language" />
 				<xs:element ref="lib:libraryFunctions" minOccurs="0" />
-			    <xs:element ref="lib:libraryAdapters" minOccurs="0" />
+				<xs:element ref="lib:libraryAdapters" minOccurs="0" />
 			</xs:sequence>
 		</xs:complexType>
 	</xs:element>
diff --git a/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptor.java b/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptor.java
new file mode 100644
index 0000000..cb0142a
--- /dev/null
+++ b/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptor.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.external.library.adaptor;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PipedInputStream;
+import java.io.PipedOutputStream;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import edu.uci.ics.asterix.external.dataset.adapter.StreamBasedAdapter;
+import edu.uci.ics.asterix.metadata.feeds.IFeedAdapter;
+import edu.uci.ics.asterix.om.types.ARecordType;
+import edu.uci.ics.hyracks.api.comm.IFrameWriter;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.dataflow.std.file.ITupleParserFactory;
+
+public class TestTypedAdaptor extends StreamBasedAdapter implements IFeedAdapter {
+
+    private static final long serialVersionUID = 1L;
+
+    private final PipedOutputStream pos;
+
+    private final PipedInputStream pis;
+
+    private final Map<String, String> configuration;
+
+    private DummyGenerator generator;
+
+    public TestTypedAdaptor(ITupleParserFactory parserFactory, ARecordType sourceDatatype, IHyracksTaskContext ctx,
+            Map<String, String> configuration) throws IOException {
+        super(parserFactory, sourceDatatype, ctx);
+        pos = new PipedOutputStream();
+        pis = new PipedInputStream(pos);
+        this.configuration = configuration;
+    }
+
+    @Override
+    public InputStream getInputStream(int partition) throws IOException {
+        return pis;
+    }
+
+    @Override
+    public void start(int partition, IFrameWriter frameWriter) throws Exception {
+        generator = new DummyGenerator(configuration, pos);
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+        executor.execute(generator);
+        super.start(partition, frameWriter);
+    }
+
+    private static class DummyGenerator implements Runnable {
+
+        private final int nOutputRecords;
+        private final OutputStream os;
+        private final byte[] EOL = "\n".getBytes();
+        private boolean continueIngestion;
+
+        public DummyGenerator(Map<String, String> configuration, OutputStream os) {
+            nOutputRecords = Integer.parseInt(configuration.get(TestTypedAdaptorFactory.KEY_NUM_OUTPUT_RECORDS));
+            this.os = os;
+            this.continueIngestion = true;
+        }
+
+        @Override
+        public void run() {
+            DummyRecord dummyRecord = new DummyRecord();
+            try {
+                int i = 0;
+                while (continueIngestion && i < nOutputRecords) {
+                    dummyRecord.reset(i + 1, "" + (i + 1));
+                    os.write(dummyRecord.toString().getBytes());
+                    os.write(EOL);
+                    i++;
+                }
+            } catch (IOException ioe) {
+                ioe.printStackTrace();
+            } finally {
+                try {
+                    os.close();
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+
+        public void stop() {
+            continueIngestion = false;
+        }
+    }
+
+    private static class DummyRecord {
+
+        private int tweetid = 0;
+        private String text = null;
+
+        public void reset(int tweetid, String text) {
+            this.tweetid = tweetid;
+            this.text = text;
+        }
+
+        @Override
+        public String toString() {
+            return "{" + "\"tweetid\":" + "int64(" + "\"" + tweetid + "\"" + ")" + "," + "\"message-text\":" + "\""
+                    + text + "\"" + "}";
+        }
+
+    }
+
+    @Override
+    public DataExchangeMode getDataExchangeMode() {
+        return DataExchangeMode.PUSH;
+    }
+
+    @Override
+    public void stop() throws Exception {
+        generator.stop();
+    }
+
+}
diff --git a/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptorFactory.java b/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptorFactory.java
new file mode 100644
index 0000000..39f7ab2
--- /dev/null
+++ b/asterix-external-data/src/test/java/edu/uci/ics/asterix/external/library/adaptor/TestTypedAdaptorFactory.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.external.library.adaptor;
+
+import java.util.Map;
+
+import edu.uci.ics.asterix.common.exceptions.AsterixException;
+import edu.uci.ics.asterix.metadata.feeds.IDatasourceAdapter;
+import edu.uci.ics.asterix.metadata.feeds.ITypedAdapterFactory;
+import edu.uci.ics.asterix.om.types.ARecordType;
+import edu.uci.ics.asterix.om.types.BuiltinType;
+import edu.uci.ics.asterix.om.types.IAType;
+import edu.uci.ics.asterix.runtime.operators.file.AdmSchemafullRecordParserFactory;
+import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksCountPartitionConstraint;
+import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksPartitionConstraint;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.dataflow.std.file.ITupleParserFactory;
+
+public class TestTypedAdaptorFactory implements ITypedAdapterFactory {
+
+    public static final String NAME = "test_typed_adaptor";
+
+    private static ARecordType adapterOutputType = initOutputType();
+
+    public static final String KEY_NUM_OUTPUT_RECORDS = "num_output_records";
+
+    private Map<String, String> configuration;
+
+    @Override
+    public SupportedOperation getSupportedOperations() {
+        return SupportedOperation.READ;
+    }
+
+    private static ARecordType initOutputType() {
+        String[] fieldNames = new String[] { "tweetid", "message-text" };
+        IAType[] fieldTypes = new IAType[] { BuiltinType.AINT64, BuiltinType.ASTRING };
+        ARecordType outputType = null;
+        try {
+            outputType = new ARecordType("TestTypedAdaptorOutputType", fieldNames, fieldTypes, false);
+        } catch (AsterixException exception) {
+            throw new IllegalStateException("Unable to create output type for adaptor " + NAME);
+        }
+        return outputType;
+    }
+
+    @Override
+    public String getName() {
+        return NAME;
+    }
+
+    @Override
+    public AdapterType getAdapterType() {
+        return AdapterType.TYPED;
+    }
+
+    @Override
+    public AlgebricksPartitionConstraint getPartitionConstraint() throws Exception {
+        return new AlgebricksCountPartitionConstraint(1);
+    }
+
+    @Override
+    public IDatasourceAdapter createAdapter(IHyracksTaskContext ctx, int partition) throws Exception {
+        ITupleParserFactory tupleParserFactory = new AdmSchemafullRecordParserFactory(adapterOutputType);
+        return new TestTypedAdaptor(tupleParserFactory, adapterOutputType, ctx, configuration);
+    }
+
+    @Override
+    public ARecordType getAdapterOutputType() {
+        return adapterOutputType;
+    }
+
+    @Override
+    public void configure(Map<String, String> configuration) throws Exception {
+        this.configuration = configuration;
+    }
+
+}
diff --git a/asterix-external-data/src/test/resources/text_functions.xml b/asterix-external-data/src/test/resources/text_functions.xml
index bd485a4..a0b7bf9 100644
--- a/asterix-external-data/src/test/resources/text_functions.xml
+++ b/asterix-external-data/src/test/resources/text_functions.xml
@@ -50,4 +50,10 @@
 			</definition>
 		</libraryFunction>
 	</libraryFunctions>
+	<libraryAdapters>
+		<libraryAdapter>
+			<name>test_typed_adaptor</name>
+			<factory_class>edu.uci.ics.asterix.external.library.adaptor.TestTypedAdaptorFactory</factory_class>
+		</libraryAdapter>
+	</libraryAdapters>
 </externalLibrary>