Java Code Examples for java.io.ObjectStreamClass#getFields()

The following examples show how to use java.io.ObjectStreamClass#getFields() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ValueType.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 2
Source File: ValueType.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 3
Source File: ValueType.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 4
Source File: TestObjectStreamClass.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 5
Source File: ValueType.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 6
Source File: TestObjectStreamClass.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 7
Source File: TestObjectStreamClass.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 8
Source File: ValueType.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 9
Source File: TestObjectStreamClass.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 10
Source File: ObjectStreamClassTest.java    From j2objc with Apache License 2.0 6 votes vote down vote up 
public void test_specialTypes() {
    Class<?> proxyClass = Proxy.getProxyClass(this.getClass()
            .getClassLoader(), new Class[] { Runnable.class });

    ObjectStreamClass proxyStreamClass = ObjectStreamClass
            .lookup(proxyClass);

    assertEquals("Proxy classes should have zero serialVersionUID", 0,
            proxyStreamClass.getSerialVersionUID());
    ObjectStreamField[] proxyFields = proxyStreamClass.getFields();
    assertEquals("Proxy classes should have no serialized fields", 0,
            proxyFields.length);

    ObjectStreamClass enumStreamClass = ObjectStreamClass
            .lookup(Thread.State.class);

    assertEquals("Enum classes should have zero serialVersionUID", 0,
            enumStreamClass.getSerialVersionUID());
    ObjectStreamField[] enumFields = enumStreamClass.getFields();
    assertEquals("Enum classes should have no serialized fields", 0,
            enumFields.length);
}
Example 11
Source File: TestObjectStreamClass.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 12
Source File: ValueType.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 13
Source File: ValueType.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Get the names and types of all the persistent fields of a Class.
 */
private Hashtable getPersistentFields (Class clz) {
    Hashtable result = new Hashtable();
    ObjectStreamClass osc = ObjectStreamClass.lookup(clz);
    if (osc != null) {
        ObjectStreamField[] fields = osc.getFields();
        for (int i = 0; i < fields.length; i++) {
            String typeSig;
            String typePrefix = String.valueOf(fields[i].getTypeCode());
            if (fields[i].isPrimitive()) {
                typeSig = typePrefix;
            } else {
                if (fields[i].getTypeCode() == '[') {
                    typePrefix = "";
                }
                typeSig = typePrefix + fields[i].getType().getName().replace('.','/');
                if (typeSig.endsWith(";")) {
                    typeSig = typeSig.substring(0,typeSig.length()-1);
                }
            }
            result.put(fields[i].getName(),typeSig);
        }
    }
    return result;
}
Example 14
Source File: TestObjectStreamClass.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 15
Source File: TestObjectStreamClass.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
    ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
    ObjectOutputStream output = new ObjectOutputStream(byteOutput);
    output.writeObject(new TestClass());

    ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
    TestObjectInputStream input = new TestObjectInputStream(bais);
    input.readObject();

    ObjectStreamClass osc = input.getDescriptor();

    // All OSC public API methods should complete without throwing.
    osc.getName();
    osc.forClass();
    osc.getField("str");
    osc.getFields();
    osc.getSerialVersionUID();
    osc.toString();
}
Example 16
Source File: SerializableDemo.java    From Learn-Java-12-Programming with MIT License 5 votes vote down vote up 
private static void printInfo(ObjectStreamClass osc) {
    System.out.println(osc.forClass());
    System.out.println("Class name: " + osc.getName());
    System.out.println("SerialVersionUID: " + osc.getSerialVersionUID());
    ObjectStreamField[] fields = osc.getFields();
    System.out.println("Serialized fields:");
    for (ObjectStreamField osf : fields) {
        System.out.println(osf.getName() + ": ");
        System.out.println("\t" + osf.getType());
        System.out.println("\t" + osf.getTypeCode());
        System.out.println("\t" + osf.getTypeString());
        System.out.println("\t" + osf.getOffset());
    }
}
Example 17
Source File: SerializationTest.java    From j2objc with Apache License 2.0 5 votes vote down vote up 
public void testSerializeFieldMadeTransient() throws Exception {
    // Does ObjectStreamClass have the right idea?
    ObjectStreamClass osc = ObjectStreamClass.lookup(FieldMadeTransient.class);
    ObjectStreamField[] fields = osc.getFields();
    assertEquals(1, fields.length);
    assertEquals("nonTransientInt", fields[0].getName());
    assertEquals(int.class, fields[0].getType());

    // this was created by serializing a FieldMadeTransient with a non-0 transientInt
    String s = "aced0005737200346c6962636f72652e6a6176612e696f2e53657269616c697a6174696f6e54657"
            + "374244669656c644d6164655472616e7369656e74000000000000000002000149000c7472616e736"
            + "9656e74496e747870abababab";
    FieldMadeTransient deserialized = (FieldMadeTransient) SerializationTester.deserializeHex(s);
    assertEquals(0, deserialized.transientInt);
}
Example 18
Source File: SerializablePortability.java    From offheap-store with Apache License 2.0 5 votes vote down vote up 
private static boolean equals(ObjectStreamClass osc1, ObjectStreamClass osc2) {
  if (osc1 == osc2) {
    return true;
  } else if (osc1.getName().equals(osc2.getName()) && osc1.getSerialVersionUID() == osc2.getSerialVersionUID() && osc1.getFields().length == osc2.getFields().length) {
    try {
      return Arrays.equals(getSerializedForm(osc1), getSerializedForm(osc2));
    } catch (IOException e) {
      throw new AssertionError(e);
    }
  } else {
    return false;
  }
}
Example 19
Source File: CompactJavaSerializer.java    From ehcache3 with Apache License 2.0 5 votes vote down vote up 
private static boolean equals(ObjectStreamClass osc1, ObjectStreamClass osc2) {
  if (osc1 == osc2) {
    return true;
  } else if (osc1.getName().equals(osc2.getName()) && osc1.getSerialVersionUID() == osc2.getSerialVersionUID() && osc1.getFields().length == osc2.getFields().length) {
    try {
      return Arrays.equals(getSerializedForm(osc1), getSerializedForm(osc2));
    } catch (IOException e) {
      throw new AssertionError(e);
    }
  } else {
    return false;
  }
}
Example 20
Source File: ObjectStreamClassTest.java    From j2objc with Apache License 2.0 5 votes vote down vote up 
/**
 * java.io.ObjectStreamClass#getFields()
 */
public void test_getFields() {
    ObjectStreamClass osc = ObjectStreamClass.lookup(DummyClass.class);
    ObjectStreamField[] osfArray = osc.getFields();
    assertTrue(
            "Array of fields should be of length 2 but is instead of length: "
                    + osfArray.length, osfArray.length == 2);
}