diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
new file mode 100644
index 0000000..e417738
--- /dev/null
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
@@ -0,0 +1,49 @@
+package org.ntlab.traceCollector.tracer.trace;
+
+/**
+ * �I�u�W�F�N�g�̎Q�Ə��(�G�C���A�X)��\���N���X
+ * @author Isitani
+ *
+ */
+public class Alias {
+	private String objectId;
+	private TracePoint occurrencePoint; // ���Y�I�u�W�F�N�g�̎Q�Ƃ��s���Ă�����s�ӏ��ɑΉ�����TracePoint
+	/**
+	 * ���Y�I�u�W�F�N�g�̎Q�Ƃ�TracePoint�ɂ����Ăǂ��Ɍ���Ă��邩��\��<br>
+	 * 0				�t�B�[���h�A�N�Z�X���̃R���e�i �������� ���\�b�h�Ăяo�����̃��V�[�o<br>
+	 * 1, 2, 3 �c�c n		�t�B�[���h�A�N�Z�X���̃t�B�[���h(1) �������� ���\�b�h�Ăяo������n�Ԗڂ̎�����  (1���珇�Ԃ�)<br>
+	 * -1				���\�b�h�Ăяo�����̖߂�l<br>
+	 * <br>
+	 * ��1: d = a.m(b, c);<br>
+	 * <br>
+	 * ��1�̎��s���ɂ�����, a�̓��\�b�h�Ăяo���̃��V�[�o�Ȃ̂�0, b�̓��\�b�h�Ăяo����1�Ԗڂ̎������Ȃ̂�1,<br>
+	 * c�̓��\�b�h�Ăяo����2�Ֆڂ̎������Ȃ̂�2, a.m(b, c)�̖߂�l��-1 �ƂȂ�.<br>
+	 * <br>
+	 * ��2: d = a.f;<br>
+	 * ��2�̎��s���ɂ�����, a�̓t�B�[���h�̃R���e�i�Ȃ̂�0, b�̓t�B�[���h�Ȃ̂�1 �ƂȂ�.
+	 * 
+	 */
+	private int occurrenceExp;
+	public static final int OCCURRENCE_EXP_CONTAINER = 0;
+	public static final int OCCURRENCE_EXP_RECEIVER = 0;
+	public static final int OCCURRENCE_EXP_FIELD = 1;	
+	public static final int OCCURRENCE_EXP_RETURN = -1;
+	
+	public Alias(String objectId, TracePoint occurrencePoint, int occurrenceExp) {
+		this.objectId = objectId;
+		this.occurrencePoint = occurrencePoint;
+		this.occurrenceExp = occurrenceExp;
+	}
+	
+	public String getObjectId() {
+		return objectId;
+	}
+
+	public TracePoint getOccurrencePoint() {
+		return occurrencePoint;
+	}
+
+	public int getOccurrenceExp() {
+		return occurrenceExp;
+	}	
+}
diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/MethodExecution.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/MethodExecution.java
index 1b581d2..3eabbf5 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/MethodExecution.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/MethodExecution.java
@@ -274,4 +274,16 @@
 		}
 		return null;
 	}
+
+	/**
+	 * order���w�肵�đΉ�����TracePoint��Ԃ�
+	 * @param order TracePoint��order
+	 * @return
+	 */
+	public TracePoint getTracePoint(int order) {
+		if (order < this.getStatements().size()) {
+			return new TracePoint(this, order);
+		}
+		return null;
+	}
 }
diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/TraceJSON.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/TraceJSON.java
index 9fd4929..ebb496d 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/TraceJSON.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/TraceJSON.java
@@ -975,4 +975,49 @@
 		}
 		return null;
 	}
+	
+	public static Alias getAlias(String objectId, TracePoint occurrencePoint, int occurrenceExp) {
+		return new Alias(objectId, occurrencePoint, occurrenceExp);
+	}
+	
+	public static ArrayList<Alias> getObjectFlow(Alias alias) {
+		ArrayList<Alias> aliases = new ArrayList<>();
+		aliases.add(alias);
+		String aliasObjId = alias.getObjectId();
+		TracePoint tracePoint = alias.getOccurrencePoint();
+		while (tracePoint.stepBackOver()) {
+			Statement statement = tracePoint.getStatement();
+			if (statement instanceof FieldAccess) {
+				FieldAccess fs = (FieldAccess)statement;
+				String containerObjId = fs.getContainerObjId();
+				String valueObjId = fs.getValueObjId();
+				if (aliasObjId.equals(valueObjId)) {
+					aliases.add(new Alias(aliasObjId, tracePoint, Alias.OCCURRENCE_EXP_FIELD));
+					tracePoint = getFieldUpdateTracePoint(containerObjId, fs.getFieldName(), tracePoint);
+				}
+			} else if (statement instanceof ArrayAccess) {
+				ArrayAccess aa = (ArrayAccess)statement;
+				String arrayObjId = aa.getArrayObjectId();
+				String valueObjId = aa.getValueObjectId();
+				if (aliasObjId.equals(valueObjId)) {
+					aliases.add(new Alias(aliasObjId, tracePoint, Alias.OCCURRENCE_EXP_FIELD));
+					tracePoint = getArrayUpdateTracePoint(arrayObjId, aa.getIndex(), tracePoint);
+				}
+			} else if (statement instanceof ArrayCreate) {
+				ArrayCreate ac = (ArrayCreate)statement;
+				
+			} else if (statement instanceof MethodInvocation) {
+				MethodExecution prevChildMethodExecution = ((MethodInvocation)statement).getCalledMethodExecution();
+				ObjectReference returnValue = prevChildMethodExecution.getReturnValue();
+				String returnId = returnValue.getId();
+				if (aliasObjId.equals(returnId)) {
+					aliases.add(new Alias(aliasObjId, tracePoint, Alias.OCCURRENCE_EXP_RETURN));
+					tracePoint.stepBackNoReturn();
+				}
+			}
+		}
+		
+		
+		return aliases;
+	}
 }