2023-06-28T00:36

kenta-shimizu · Jun 27, 2023 · 7d81037 · 7d81037
1 parent 57831ef
commit 7d81037
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diff --git a/README.md b/README.md
@@ -241,6 +241,14 @@ System.out.println(json);
 
 See also ["/src/examples/example07/CreateJsonStringByBuilder.java"](/src/examples/example07/CreateJsonStringByBuilder.java)
 
+## JSONPath
+
+Supports
+
+
+
+See also ["/src/examples/example11/JsonPath.java"](/src/examples/example11/JsonPath.java)
+
 ## JSONC Reading
 
 JSONC (JSON with comments) support.

diff --git a/src/examples/example10/ReadJsoncFile.java b/src/examples/example10/ReadJsoncFile.java
@@ -8,7 +8,7 @@
 import java.util.List;
 
 import com.shimizukenta.jsonhub.JsonHub;
-import com.shimizukenta.jsonhub.impl.JsoncReaderImpl;
+import com.shimizukenta.jsonhub.JsoncReader;
 
 public class ReadJsoncFile {
 
@@ -45,7 +45,7 @@ public static void main(String[] args) {
 						StandardOpenOption.CREATE);
 			}
 
-			JsonHub jh = JsoncReaderImpl.readFile(path);
+			JsonHub jh = JsoncReader.readFile(path);
 
 			System.out.println(jh.prettyPrint());
 		}

diff --git a/src/examples/example11/JsonPath.java b/src/examples/example11/JsonPath.java
@@ -0,0 +1,74 @@
+package example11;
+
+import java.util.List;
+
+import com.shimizukenta.jsonhub.JsonHub;
+import com.shimizukenta.jsonhub.JsonPathParseException;
+
+public class JsonPath {
+
+	public JsonPath() {
+		/* Nothing */
+	}
+
+	public static void main(String[] args) {
+
+		String json = "{ \"store\": {                            "
+				+ "    \"book\": [                               "
+				+ "     { \"category\": \"reference\",           "
+				+ "        \"author\": \"Nigel Rees\",           "
+				+ "        \"title\": \"Sayings of the Century\","
+				+ "        \"price\": 8.95                       "
+				+ "      },                                      "
+				+ "      { \"category\": \"fiction\",            "
+				+ "        \"author\": \"Evelyn Waugh\",         "
+				+ "        \"title\": \"Sword of Honour\",       "
+				+ "        \"price\": 12.99                      "
+				+ "      },                                      "
+				+ "      { \"category\": \"fiction\",            "
+				+ "        \"author\": \"Herman Melville\",      "
+				+ "        \"title\": \"Moby Dick\",             "
+				+ "        \"isbn\": \"0-553-21311-3\",          "
+				+ "        \"price\": 8.99                       "
+				+ "      },                                      "
+				+ "      { \"category\": \"fiction\",            "
+				+ "        \"author\": \"J. R. R. Tolkien\",     "
+				+ "        \"title\": \"The Lord of the Rings\", "
+				+ "        \"isbn\": \"0-395-19395-8\",          "
+				+ "        \"price\": 22.99                      "
+				+ "      }                                       "
+				+ "    ],                                        "
+				+ "    \"bicycle\": {                            "
+				+ "      \"color\": \"red\",                     "
+				+ "      \"price\": 19.95                        "
+				+ "    }                                         "
+				+ "  }                                           "
+				+ "}                                             ";
+
+		JsonHub jh = JsonHub.fromJson(json);
+
+		tryJsonPath(jh, "$.store.book[*].author");
+		tryJsonPath(jh, "$..author");
+		tryJsonPath(jh, "$.store.*");
+		tryJsonPath(jh, "$.store..price");
+		tryJsonPath(jh, "$..book[2]");
+		tryJsonPath(jh, "$..book[-1]");
+		tryJsonPath(jh, "$..book[:2]");
+
+	}
+
+	private static void tryJsonPath(JsonHub jh, String jsonPath) {
+		try {
+			System.out.println("JsonPath: \"" + jsonPath + "\"");
+			List<JsonHub> ll = jh.jsonPath(jsonPath);
+			System.out.println("result length: " + ll.size());
+			ll.forEach(x -> {
+				System.out.println(x.prettyPrint());
+			});
+			System.out.println();
+		}
+		catch (JsonPathParseException e) {
+			e.printStackTrace();
+		}
+	}
+}
diff --git a/src/main/java/com/shimizukenta/jsonhub/JsonPathUnsupportedParseException.java b/src/main/java/com/shimizukenta/jsonhub/JsonPathUnsupportedParseException.java
@@ -0,0 +1,62 @@
+package com.shimizukenta.jsonhub;
+
+/**
+ * JsonPath unsupported parse Exception.
+ * 
+ * @author kenta-shimizu
+ *
+ */
+public class JsonPathUnsupportedParseException extends JsonPathParseException {
+
+	private static final long serialVersionUID = 7284639685947525518L;
+
+	/**
+	 * Constructor.
+	 * 
+	 */
+	public JsonPathUnsupportedParseException() {
+		super();
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param message the message
+	 */
+	public JsonPathUnsupportedParseException(String message) {
+		super(message);
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param cause the cause
+	 */
+	public JsonPathUnsupportedParseException(Throwable cause) {
+		super(cause);
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param message the message
+	 * @param cause the cause
+	 */
+	public JsonPathUnsupportedParseException(String message, Throwable cause) {
+		super(message, cause);
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param message the message
+	 * @param cause the cause
+	 * @param enableSuppression the enableSuppression
+	 * @param writableStackTrace the writableStackTrace
+	 */
+	public JsonPathUnsupportedParseException(String message, Throwable cause, boolean enableSuppression,
+			boolean writableStackTrace) {
+		super(message, cause, enableSuppression, writableStackTrace);
+	}
+
+}
diff --git a/src/main/java/com/shimizukenta/jsonhub/impl/JsonPathParser.java b/src/main/java/com/shimizukenta/jsonhub/impl/JsonPathParser.java
@@ -9,6 +9,7 @@
 
 import com.shimizukenta.jsonhub.JsonHub;
 import com.shimizukenta.jsonhub.JsonPathParseException;
+import com.shimizukenta.jsonhub.JsonPathUnsupportedParseException;
 
 /**
  * This class is JsonPath parser.
@@ -271,7 +272,7 @@ private void recursive(JsonHub jh, List<JsonHub> ll) {
 	}
 
 
-	//TODO
+	//HOOK
 	//filter
 	//script
 
@@ -393,6 +394,19 @@ private static FindBracketGetterResult findBracketEnd(String jp, int pos, boolea
 
 		final FindCharResult r = FindChars.nextIgnoreWhiteSpace(jp, pos);
 
+		if ( r.c == '*' ) {
+			final FindCharResult er = FindChars.nextIgnoreWhiteSpace(jp,  r.pos + 1);
+			if ( er.c == ']' ) {
+				if ( recursive ) {
+					return new FindBracketGetterResult(recursiveWildcard, er.pos + 1);
+				} else {
+					return new FindBracketGetterResult(childWildcard, er.pos + 1);
+				}
+			} else {
+				throw new JsonPathParseException("Fount after '*'. position: " + er.pos);
+			}
+		}
+
 		if (
 				(r.c >= '0' && r.c <= '9')
 				|| r.c == '-'
@@ -636,16 +650,20 @@ private static int findScriptEnd(String jp, int fromIndex) {
 
 	private static JsonPathGetter parseFilterGetter(String filter) {
 
-		//TODO
+		//HOOK
 
-		return (a, b) -> a;
+		throw new JsonPathUnsupportedParseException("?()");
+
+//		return (a, b) -> a;
 	}
 
 	private static JsonPathGetter parseScriptGetter(String script) {
 
-		//TODO
+		//HOOK
+
+		throw new JsonPathUnsupportedParseException("()");
 
-		return (a, b) -> a;
+//		return (a, b) -> a;
 	}
 
 }