From 7beef2b80fb025de6d79e074f4cdae8bc18e61be Mon Sep 17 00:00:00 2001
From: XudongXie <xiexudong23@otcaix.iscas.ac.cn>
Date: Sun, 18 Aug 2024 22:42:41 +0800
Subject: [PATCH] add AST node

---
 sqlTranslate/.idea/uiDesigner.xml             | 124 ++++++++++++++++++
 sqlTranslate/.idea/workspace.xml              |  37 ++++--
 .../java/Generator/OpenGaussGenerator.java    |   4 +
 .../src/main/java/Lexer/OracleLexer.java      |   3 +
 .../main/java/Parser/{ => AST}/ASTNode.java   |  45 +------
 .../main/java/Parser/AST/CreateTabNode.java   |  28 ++++
 .../java/Parser/AST/SelectStatementNode.java  |  25 ++++
 .../main/java/Parser/AST/TableTypeNode.java   |  24 ++++
 .../src/main/java/Parser/OracleParser.java    |   4 +
 9 files changed, 241 insertions(+), 53 deletions(-)
 create mode 100644 sqlTranslate/.idea/uiDesigner.xml
 create mode 100644 sqlTranslate/src/main/java/Generator/OpenGaussGenerator.java
 rename sqlTranslate/src/main/java/Parser/{ => AST}/ASTNode.java (61%)
 create mode 100644 sqlTranslate/src/main/java/Parser/AST/CreateTabNode.java
 create mode 100644 sqlTranslate/src/main/java/Parser/AST/SelectStatementNode.java
 create mode 100644 sqlTranslate/src/main/java/Parser/AST/TableTypeNode.java
 create mode 100644 sqlTranslate/src/main/java/Parser/OracleParser.java

diff --git a/sqlTranslate/.idea/uiDesigner.xml b/sqlTranslate/.idea/uiDesigner.xml
new file mode 100644
index 000000000..2b63946d5
--- /dev/null
+++ b/sqlTranslate/.idea/uiDesigner.xml
@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
\ No newline at end of file
diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index 00b09c293..88b31e623 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,12 +4,16 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="lexer">
-      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/ASTNode.java" afterDir="false" />
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="AST node">
+      <change afterPath="$PROJECT_DIR$/.idea/uiDesigner.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Generator/OpenGaussGenerator.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/CreateTabNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/SelectStatementNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/TableTypeNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Lexer/Token.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/Token.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Main.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/ASTNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/ASTNode.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -41,13 +45,14 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent">{
-  &quot;keyToString&quot;: {
-    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
-    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
-    &quot;SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.OpenProjectViewOnStart": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "SHARE_PROJECT_CONFIGURATION_FILES": "true",
+    "last_opened_file_path": "F:/oracle2opengauss/examples/sqlTranslate"
   }
-}</component>
+}]]></component>
   <component name="RunManager" selected="应用程序.Main">
     <configuration name="App" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
       <option name="MAIN_CLASS_NAME" value="org.example.App" />
@@ -116,7 +121,14 @@
       <option name="project" value="LOCAL" />
       <updated>1723818930161</updated>
     </task>
-    <option name="localTasksCounter" value="3" />
+    <task id="LOCAL-00003" summary="AST node">
+      <created>1723871742424</created>
+      <option name="number" value="00003" />
+      <option name="presentableId" value="LOCAL-00003" />
+      <option name="project" value="LOCAL" />
+      <updated>1723871742424</updated>
+    </task>
+    <option name="localTasksCounter" value="4" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -133,6 +145,7 @@
   <component name="VcsManagerConfiguration">
     <MESSAGE value="init" />
     <MESSAGE value="lexer" />
-    <option name="LAST_COMMIT_MESSAGE" value="lexer" />
+    <MESSAGE value="AST node" />
+    <option name="LAST_COMMIT_MESSAGE" value="AST node" />
   </component>
 </project>
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Generator/OpenGaussGenerator.java b/sqlTranslate/src/main/java/Generator/OpenGaussGenerator.java
new file mode 100644
index 000000000..6e4a894fc
--- /dev/null
+++ b/sqlTranslate/src/main/java/Generator/OpenGaussGenerator.java
@@ -0,0 +1,4 @@
+package Generator;
+
+public class OpenGaussGenerator {
+}
diff --git a/sqlTranslate/src/main/java/Lexer/OracleLexer.java b/sqlTranslate/src/main/java/Lexer/OracleLexer.java
index 2f4416003..affc0b649 100644
--- a/sqlTranslate/src/main/java/Lexer/OracleLexer.java
+++ b/sqlTranslate/src/main/java/Lexer/OracleLexer.java
@@ -9,6 +9,9 @@ import java.util.regex.Pattern;
 
 public class OracleLexer {
     public static final String[] keywords = {"SELECT", "FROM", "WHERE", "AND", "OR", "INSERT", "UPDATE", "DELETE",
+            // keywords of creating table
+            "CREATE", "TABLE", "TEMPORARY", "",
+
             "now()"};
     private static final Pattern TOKEN_PATTERN = Pattern.compile(
             "(now\\(\\))|" +                    // now() function
diff --git a/sqlTranslate/src/main/java/Parser/ASTNode.java b/sqlTranslate/src/main/java/Parser/AST/ASTNode.java
similarity index 61%
rename from sqlTranslate/src/main/java/Parser/ASTNode.java
rename to sqlTranslate/src/main/java/Parser/AST/ASTNode.java
index 3df845394..de0926146 100644
--- a/sqlTranslate/src/main/java/Parser/ASTNode.java
+++ b/sqlTranslate/src/main/java/Parser/AST/ASTNode.java
@@ -1,12 +1,11 @@
-package Parser;
+package Parser.AST;
 
 import Lexer.Token;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 
-public class ASTNode {
+public abstract class ASTNode {
     private Token token;
     private ASTNode parent;
     private List<ASTNode> children = new ArrayList<>();
@@ -96,50 +95,14 @@ public class ASTNode {
 
     public String toQueryString() {
         StringBuilder queryString = new StringBuilder();
-        visit(this, queryString, false);
+        visit(this, queryString);
         return queryString.toString();
     }
 
-    private void visit(ASTNode node, StringBuilder queryString, boolean hasPrespace) {
-        if (node == null) {
-            return;
-        }
-        if (node.getToken().hasType(Token.TokenType.KEYWORD)) {
-            String value = node.getToken().getValue();
-            if (value == null || value.trim().isEmpty()) {
-                return;
-            }
-            boolean preSpace = true;
-            if (queryString.length() == 0) {
-                preSpace = false;
-            } else if (queryString.charAt(queryString.length() - 1) == '(') {
-                preSpace = false;
-            } else if (Arrays.asList(",", ";", ")").contains(value)) {
-                preSpace = false;
-            } else if (!hasPrespace) {
-                // If the token does not have pre space, we should not add, either.
-                preSpace = false;
-            }
-            if (preSpace) {
-                queryString.append(" ");
-            }
-            queryString.append(value);
-        } else {
-            for (int i = 0; i < node.getChildren().size(); i++) {
-                ASTNode childNode = node.getChildren().get(i);
-                if (i == 0) {
-                    visit(childNode, queryString, hasPrespace || childNode.getToken().hasPreSpace());
-                } else {
-                    visit(childNode, queryString, childNode.getToken().hasPreSpace());
-                }
-            }
-        }
-    }
+    public abstract void visit(ASTNode node, StringBuilder queryString);
 
     @Override
     public String toString() {
         return token.getValue();
     }
-
-
 }
diff --git a/sqlTranslate/src/main/java/Parser/AST/CreateTabNode.java b/sqlTranslate/src/main/java/Parser/AST/CreateTabNode.java
new file mode 100644
index 000000000..9a63d5bc1
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/CreateTabNode.java
@@ -0,0 +1,28 @@
+package Parser.AST;
+
+import Lexer.Token;
+
+public class CreateTabNode extends ASTNode{
+    public CreateTabNode(ASTNode node) {
+        super(node);
+    }
+
+    public CreateTabNode(Token token) {
+        super(token);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        // judge the type of the table
+        if (getChildren().get(0) instanceof TableTypeNode) {
+            queryString.append("CREATE ");
+        }
+        else {
+            queryString.append("CREATE TABLE ");
+        }
+        for (ASTNode child : getChildren())
+        {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/SelectStatementNode.java b/sqlTranslate/src/main/java/Parser/AST/SelectStatementNode.java
new file mode 100644
index 000000000..d7ac736b5
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/SelectStatementNode.java
@@ -0,0 +1,25 @@
+package Parser.AST;
+
+import Lexer.Token;
+
+public class SelectStatementNode extends ASTNode{
+    public SelectStatementNode(ASTNode node)
+    {
+        super(node);
+    }
+
+    public SelectStatementNode(Token token)
+    {
+        super(token);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString)
+    {
+        queryString.append("SELECT ");
+        for (ASTNode child : getChildren())
+        {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/TableTypeNode.java b/sqlTranslate/src/main/java/Parser/AST/TableTypeNode.java
new file mode 100644
index 000000000..7bac10284
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/TableTypeNode.java
@@ -0,0 +1,24 @@
+package Parser.AST;
+
+import Lexer.Token;
+
+public class TableTypeNode extends ASTNode{
+    public TableTypeNode(ASTNode node)
+    {
+        super(node);
+    }
+    public TableTypeNode(Token token)
+    {
+        super(token);
+    }
+
+    public void visit(ASTNode node, StringBuilder queryString)
+    {
+        queryString.append(getToken() + " ");
+        for (ASTNode child : getChildren())
+        {
+            child.visit(child, queryString);
+        }
+    }
+
+}
diff --git a/sqlTranslate/src/main/java/Parser/OracleParser.java b/sqlTranslate/src/main/java/Parser/OracleParser.java
new file mode 100644
index 000000000..6d0133399
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/OracleParser.java
@@ -0,0 +1,4 @@
+package Parser;
+
+public class OracleParser {
+}