add project of builder pattern

students/495232796/OOD/builderpattern/pom.xml

@@ -0,0 +1,42 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.coderising</groupId>
+  <artifactId>ood-assignment</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+      <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.7</source>
+                    <target>1.7</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <packaging>jar</packaging>
+
+  <name>ood-assignment</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+
+    <dependency>
+    	<groupId>junit</groupId>
+    	<artifactId>junit</artifactId>
+    	<version>4.12</version>
+    </dependency>
+
+  </dependencies>
+  <repositories>
+        <repository>
+            <id>aliyunmaven</id>
+            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
+        </repository>
+    </repositories>
+</project>

students/495232796/OOD/builderpattern/src/main/java/com/coderising/dp/builder/TagBuilder.java

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+package com.coderising.dp.builder;
+
+public class TagBuilder {
+	private TagNode rootNode = null;
+	private TagNode curNode = null;
+	private TagNode parentNode = null;
+
+	public TagBuilder(String rootTagName){
+		rootNode = new TagNode(rootTagName);
+		curNode = rootNode;
+	}
+
+	public TagBuilder addChild(String childTagName){
+		TagNode tn = new TagNode(childTagName);
+		curNode.add(tn);
+		parentNode = curNode;
+		curNode = tn;
+
+		return this;
+	}
+	public TagBuilder addSibling(String siblingTagName){
+		TagNode tn = new TagNode(siblingTagName);
+		parentNode.add(tn);
+		curNode = tn;
+
+		return this;
+	}
+	public TagBuilder setAttribute(String name, String value){
+		curNode.setAttribute(name, value);
+
+		return this;
+	}
+	public TagBuilder setText(String value){
+		curNode.setValue(value);
+
+		return this;
+	}
+	public String toXML(){
+		return rootNode.toXML();
+	}
+}

students/495232796/OOD/builderpattern/src/main/java/com/coderising/dp/builder/TagBuilderTest.java

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+package com.coderising.dp.builder;
+
+import static org.junit.Assert.*;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class TagBuilderTest {
+
+	@Before
+	public void setUp() throws Exception {
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+	@Test
+	public void testToXML() {
+
+		TagBuilder builder = new TagBuilder("order");
+
+		String xml = builder.addChild("line-items")
+			.addChild("line-item").setAttribute("pid", "P3677").setAttribute("qty", "3")
+			.addSibling("line-item").setAttribute("pid", "P9877").setAttribute("qty", "10")
+			.toXML();
+
+		String expected = "<order>"
+				+ "<line-items>"
+				+ "<line-item pid=\"P3677\" qty=\"3\"/>"
+				+ "<line-item pid=\"P9877\" qty=\"10\"/>"
+				+ "</line-items>"
+				+ "</order>";
+
+		System.out.println(xml);
+		System.out.println(expected.equals(xml));
+		assertEquals(expected, xml);
+	}
+
+}

students/495232796/OOD/builderpattern/src/main/java/com/coderising/dp/builder/TagNode.java

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+package com.coderising.dp.builder;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TagNode {
+	private String tagName;	
+	private String tagValue;
+	private List<TagNode> children = new ArrayList<>();	
+	private List<Attribute> attributes = new ArrayList<>();
+
+	public TagNode(String name){
+		this.tagName = name;
+	}
+	public void add(TagNode child){
+		this.children.add(child);
+	}
+	public void setAttribute(String name, String value) {
+		Attribute attr = findAttribute(name);
+		if(attr != null){
+			attr.value = value;
+		} else {
+			attributes.add(new Attribute(name,value));
+		}
+	}
+	private Attribute findAttribute(String name){
+		for(Attribute attr : attributes){
+			if(attr.name.equals(name)){
+				return attr;
+			}
+		}
+		return null;
+	}
+	public void setValue(String value) {
+		this.tagValue = value;
+
+	}
+	public String getTagName() {
+		return tagName;
+	}
+	public List<TagNode> getChildren() {
+		return children;
+	}
+
+	private static class Attribute{
+		public Attribute(String name, String value) {
+			this.name = name;
+			this.value = value;
+		}
+		String name;
+		String value;
+
+	}
+	public String toXML(){
+		return toXML(this);
+	}
+	private String toXML(TagNode node){
+		StringBuilder buffer = new StringBuilder();
+		buffer.append("<").append(node.tagName);
+		if(node.attributes.size()> 0){
+			for(int i=0;i<node.attributes.size();i++){
+				Attribute attr = node.attributes.get(i);
+				buffer.append(" ").append(toXML(attr));				
+			}
+		}
+		if(node.children.size()== 0){
+			buffer.append("/>");
+			return buffer.toString();
+		}
+		buffer.append(">");		
+		for(TagNode childNode : node.children){
+			buffer.append(toXML(childNode));
+		}
+		buffer.append("</").append(node.tagName).append(">");
+
+
+		return buffer.toString();
+	}
+	private String toXML(Attribute attr){
+		return attr.name+"=\""+attr.value + "\"";
+	}
+}

students/495232796/OOD/builderpattern/src/main/java/com/coderising/dp/main/TestAll.java

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+package com.coderising.dp.main;
+
+import com.coderising.dp.builder.TagBuilderTest;
+
+public class TestAll {
+
+	public void testTag() {
+		TagBuilderTest tt = new TagBuilderTest();
+		tt.testToXML();
+	}
+
+	public static void main(String[] args) {
+		TestAll ta = new TestAll();
+		ta.testTag();
+	}
+
+}