1 files changed, 166 insertions, 0 deletions
diff --git a/src/org/traccar/database/NamedParameterStatement.java b/src/org/traccar/database/NamedParameterStatement.java
new file mode 100644
index 000000000..850462b2c
--- /dev/null
+++ b/src/org/traccar/database/NamedParameterStatement.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2012 - 2014 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 at
+ *
+ *     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 org.traccar.database;
+
+import java.sql.*;
+import java.util.*;
+import java.util.Date;
+
+public class NamedParameterStatement {
+
+    private final Map<String, List<Integer>> indexMap;
+
+    private final String parsedQuery;
+
+    public NamedParameterStatement(String query) {
+        indexMap = new HashMap<String, List<Integer>>();
+        parsedQuery = parse(query, indexMap);
+    }
+
+    static String parse(String query, Map<String, List<Integer>> paramMap) {
+
+        int length = query.length();
+        StringBuilder parsedQuery = new StringBuilder(length);
+        boolean inSingleQuote = false;
+        boolean inDoubleQuote = false;
+        int index = 1;
+
+        for(int i = 0; i < length; i++) {
+
+            char c = query.charAt(i);
+
+            // String end
+            if (inSingleQuote) {
+                if (c == '\'') inSingleQuote = false;
+            } else if (inDoubleQuote) {
+                if (c == '"') inDoubleQuote = false;
+            } else {
+
+                // String begin
+                if (c == '\'') {
+                    inSingleQuote = true;
+                } else if (c == '"') {
+                    inDoubleQuote = true;
+                } else if (c == ':' && i + 1 < length &&
+                        Character.isJavaIdentifierStart(query.charAt(i + 1))) {
+
+                    // Identifier name
+                    int j = i + 2;
+                    while (j < length && Character.isJavaIdentifierPart(query.charAt(j))) j++;
+
+                    String name = query.substring(i + 1, j);
+                    c = '?';
+                    i += name.length();
+
+                    // Add to list
+                    List<Integer> indexList = paramMap.get(name);
+                    if (indexList == null) {
+                        indexList = new LinkedList<Integer>();
+                        paramMap.put(name, indexList);
+                    }
+                    indexList.add(index);
+
+                    index++;
+                }
+            }
+
+            parsedQuery.append(c);
+        }
+
+        return parsedQuery.toString();
+    }
+
+    public PreparedStatement prepare(Connection connection, int autoGeneratedKeys) throws SQLException {
+        return connection.prepareStatement(parsedQuery, autoGeneratedKeys);
+    }
+
+    public PreparedStatement prepare(Connection connection) throws SQLException {
+        return prepare(connection, Statement.NO_GENERATED_KEYS);
+    }
+
+    public void setInt(PreparedStatement statement, String name, Integer value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setInt(index, value);
+            } else {
+                statement.setNull(index, Types.INTEGER);
+            }
+        }
+    }
+
+    public void setLong(PreparedStatement statement, String name, Long value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setLong(index, value);
+            } else {
+                statement.setNull(index, Types.INTEGER);
+            }
+        }
+    }
+
+    public void setBoolean(PreparedStatement statement, String name, Boolean value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setBoolean(index, value);
+            } else {
+                statement.setNull(index, Types.BOOLEAN);
+            }
+        }
+    }
+
+    public void setDouble(PreparedStatement statement, String name, Double value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setDouble(index, value);
+            } else {
+                statement.setNull(index, Types.DOUBLE);
+            }
+        }
+    }
+
+    public void setTimestamp(PreparedStatement statement, String name, Date value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setTimestamp(index, new Timestamp(value.getTime()));
+            } else {
+                statement.setNull(index, Types.TIMESTAMP);
+            }
+        }
+    }
+
+    public void setString(PreparedStatement statement, String name, String value) throws SQLException {
+
+        List<Integer> indexList = indexMap.get(name);
+        if (indexList != null) for (Integer index: indexList) {
+            if (value != null) {
+                statement.setString(index, value);
+            } else {
+                statement.setNull(index, Types.VARCHAR);
+            }
+        }
+    }
+
+}