| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.iapi.services.io.DebugByteTeeOutputStream |
| 4 | |
| 5 | Copyright 2001, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | package org.apache.derby.iapi.services.io; |
| 21 | |
| 22 | import java.io.*; |
| 23 | import org.apache.derby.iapi.services.io.AccessibleByteArrayOutputStream; |
| 24 | |
| 25 | |
| 26 | class DebugByteTeeOutputStream extends FilterOutputStream { |
| 27 | private AccessibleByteArrayOutputStream tee = new AccessibleByteArrayOutputStream(256); |
| 28 | |
| 29 | DebugByteTeeOutputStream(OutputStream out) { |
| 30 | super(out); |
| 31 | } |
| 32 | |
| 33 | public void write(int b) throws IOException { |
| 34 | out.write(b); |
| 35 | tee.write(b); |
| 36 | } |
| 37 | |
| 38 | public void write(byte[] b, int off, int len) throws IOException { |
| 39 | |
| 40 | out.write(b,off,len); |
| 41 | tee.write(b,off,len); |
| 42 | } |
| 43 | |
| 44 | |
| 45 | void checkObject(Formatable f) { |
| 46 | |
| 47 | ByteArrayInputStream in = new ByteArrayInputStream(tee.getInternalByteArray(), 0, tee.size()); |
| 48 | |
| 49 | FormatIdInputStream fin = new FormatIdInputStream(in); |
| 50 | |
| 51 | // now get an empty object given the format identification |
| 52 | // read it in |
| 53 | // then compare it??? |
| 54 | |
| 55 | Formatable f1 = null; |
| 56 | try { |
| 57 | |
| 58 | f1 = (Formatable) fin.readObject(); |
| 59 | |
| 60 | if (f1.equals(f)) { |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | // If the two objects are not equal and it looks |
| 65 | // like they don't implement their own equals() |
| 66 | // (which requires a matching hashCode() then |
| 67 | // just return. The object was read sucessfully. |
| 68 | |
| 69 | if ((f1.hashCode() == System.identityHashCode(f1)) && |
| 70 | (f.hashCode() == System.identityHashCode(f))) |
| 71 | return; |
| 72 | } catch (Throwable t) { |
| 73 | System.out.println("FormatableError:read error : " + t.toString()); |
| 74 | System.out.println("FormatableError:class written : " + f.getClass()); |
| 75 | if( null == f1) |
| 76 | System.out.println("FormatableError:read back as null"); |
| 77 | else |
| 78 | System.out.println("FormatableError:class read : " + f1.getClass()); |
| 79 | System.out.println("FormatableError:write id : " + FormatIdUtil.formatIdToString(f.getTypeFormatId())); |
| 80 | if( null != f1) |
| 81 | System.out.println("FormatableError:read id : " + FormatIdUtil.formatIdToString(f1.getTypeFormatId())); |
| 82 | t.printStackTrace(System.out); |
| 83 | } |
| 84 | |
| 85 | //System.out.println("FormatableError:Class written " + f.getClass() + " format id " + f.getTypeFormatId()); |
| 86 | //if (f1 != null) |
| 87 | //System.out.println("FormatableError:Class read " + f1.getClass() + " format id " + f1.getTypeFormatId()); |
| 88 | } |
| 89 | |
| 90 | } |