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
index 54126ef..0628100 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
@@ -51,33 +51,92 @@
 		return occurrenceExp;
 	}
 	
-	@Override
-	public String toString() {
-		StringBuilder str = new StringBuilder();
+	public MethodExecution getMethodExecution() {
+		return occurrencePoint.getMethodExecution();
+	}
+
+	public String getMethodSignature() {
+		return occurrencePoint.getMethodExecution().getCallerSideSignature();
+	}
+	
+	public int getLineNo() {
 		Statement statement = occurrencePoint.getStatement();
-		String className = "";
+		return statement.getLineNo();
+	}
+
+	public String getStatementType() {
+		Statement statement = occurrencePoint.getStatement();
 		String statementType = "";
 		if (statement instanceof FieldAccess) {
+			FieldAccess fa = (FieldAccess)statement;
 			statementType = "FieldAccess";
-			className = ((FieldAccess) statement).getValueClassName();
 		} else if (statement instanceof FieldUpdate) {
+			FieldUpdate fu = (FieldUpdate)statement;
 			statementType = "FieldUpdate";
-			className = ((FieldUpdate) statement).getValueClassName();
 		} else if (statement instanceof ArrayAccess) {
+			ArrayAccess aa = (ArrayAccess)statement;
 			statementType = "ArrayAccess";
+		} else if (statement instanceof ArrayUpdate) {
+			ArrayUpdate au = (ArrayUpdate)statement;
+			statementType = "ArrayUpdate";
+		} else if (statement instanceof ArrayCreate) {
+			ArrayCreate ac = (ArrayCreate)statement;
+			statementType = "ArrayCreate";
+		} else if (statement instanceof MethodInvocation) {
+			MethodExecution me = ((MethodInvocation)statement).getCalledMethodExecution();
+			statementType = "MethodInvocation";
+		}
+		return statementType;
+	}
+	
+	public String getStatementSignature() {
+		Statement statement = occurrencePoint.getStatement();
+		String statementSignature = "";
+		if (statement instanceof FieldAccess) {
+			FieldAccess fa = (FieldAccess)statement;
+			statementSignature = fa.getFieldName();
+		} else if (statement instanceof FieldUpdate) {
+			FieldUpdate fu = (FieldUpdate)statement;
+			statementSignature = fu.getFieldName();
+		} else if (statement instanceof ArrayAccess) {
+			ArrayAccess aa = (ArrayAccess)statement;
+			statementSignature = aa.getArrayClassName() + "[" + aa.getIndex() + "]";
+		} else if (statement instanceof ArrayUpdate) {
+			ArrayUpdate au = (ArrayUpdate)statement;
+			statementSignature = au.getArrayClassName() + "[" + au.getIndex() + "]";
+		} else if (statement instanceof ArrayCreate) {
+			ArrayCreate ac = (ArrayCreate)statement;
+			statementSignature = ac.getArrayClassName();
+		} else if (statement instanceof MethodInvocation) {
+			MethodExecution me = ((MethodInvocation)statement).getCalledMethodExecution();
+			statementSignature = me.getCallerSideSignature();
+		}
+		return statementSignature;		
+	}
+	
+	public String getClassName() {
+		Statement statement = occurrencePoint.getStatement();
+		String className = "";
+		if (statement instanceof FieldAccess) {
+			if (occurrenceExp == OCCURRENCE_EXP_CONTAINER) {
+				className = ((FieldAccess) statement).getContainerClassName();
+			} else if (occurrenceExp == OCCURRENCE_EXP_FIELD) {
+				className = ((FieldAccess) statement).getValueClassName();				
+			}
+		} else if (statement instanceof FieldUpdate) {
+			if (occurrenceExp == OCCURRENCE_EXP_CONTAINER) {
+				className = ((FieldUpdate) statement).getContainerClassName();
+			} else if (occurrenceExp == OCCURRENCE_EXP_FIELD) {
+				className = ((FieldUpdate) statement).getValueClassName();				
+			}
+		} else if (statement instanceof ArrayAccess) {
 			className = ((ArrayAccess) statement).getValueClassName();
 		} else if (statement instanceof ArrayUpdate) {
-			statementType = "ArrayUpdate";
 			className = ((ArrayUpdate) statement).getValueClassName();
 		} else if (statement instanceof ArrayCreate) {
-			statementType = "ArrayCreate";
 			className = ((ArrayCreate) statement).getArrayClassName();
 		} else if (statement instanceof MethodInvocation) {
 			MethodExecution me = ((MethodInvocation)statement).getCalledMethodExecution();
-			statementType = "MethodInvocation -> " + me.getCallerSideSignature();
-			if(((MethodInvocation)statement).getCalledMethodExecution().isConstructor()) {
-				statementType += " (Constructor)";
-			}
 			if (occurrenceExp == OCCURRENCE_EXP_RETURN) {
 				className = me.getReturnValue().getActualType();
 			} else if (occurrenceExp == OCCURRENCE_EXP_RECEIVER) {
@@ -90,12 +149,23 @@
 				}
 			}
 		}
+		return className;
+	}
+
+	@Override
+	public String toString() {
+		Statement statement = occurrencePoint.getStatement();
+		String className = getClassName();
+		String methodSignature = getMethodSignature();
+		String statementType = getStatementType();
+		String statementSigunarure = getStatementSignature();
 		String indent = "  ";
+		StringBuilder str = new StringBuilder();
 		str.append("objId: " + objectId + " (class = " + className + ")" + "\n");
 		str.append("tp: " + occurrencePoint + "\n");
-		str.append(indent + "signature: " + occurrencePoint.getMethodExecution().getCallerSideSignature() + "\n");
+		str.append(indent + "signature: " + methodSignature + "\n");
 		str.append(indent + "lineNo: " + statement.getLineNo() + "\n");
-		str.append(indent + "statementType: " + statementType + "\n");
+		str.append(indent + "statementType: " + statementType + " -> " + statementSigunarure + "\n");
 		str.append("occurrenceExp: " + occurrenceExp + "\n");
 		return str.toString();
 	}