Examples with PdxReader org.apache.geode.pdx.PdxReader used on opensource projects

Example 1 with PdxReader

use of org.apache.geode.pdx.PdxReader in project geode by apache.

the class PdxReaderImpl method basicGetObject.

protected Object basicGetObject() {
    String pdxClassName = getPdxType().getClassName();
    Class<?> pdxClass = getPdxType().getPdxClass();
    {
        AutoClassInfo ci = getPdxType().getAutoInfo(pdxClass);
        if (ci != null) {
            Object obj = ci.newInstance(pdxClass);
            this.orderedDeserialize(obj, ci);
            return obj;
        }
    }
    PdxReader pdxReader = this;
    // only create a tracking one if we might need it
    UnreadPdxType unreadLocalPdxType = null;
    boolean needToTrackReads = TESTHOOK_TRACKREADS;
    InternalCache cache = GemFireCacheImpl.getForPdx("PDX registry is unavailable because the Cache has been closed.");
    TypeRegistry tr = cache.getPdxRegistry();
    if (!cache.getPdxIgnoreUnreadFields()) {
        PdxType localPdxType = tr.getExistingTypeForClass(pdxClass);
        if (localPdxType != null) {
            if (getPdxType().getTypeId() != localPdxType.getTypeId() && getPdxType().hasExtraFields(localPdxType)) {
                // we could calculate the extra fields here
                needToTrackReads = true;
            }
        } else {
            // we don't know what our local type would be
            needToTrackReads = true;
        }
    }
    if (needToTrackReads) {
        unreadLocalPdxType = tr.getExistingTypeForClass(pdxClass, getPdxType().getTypeId());
        if (unreadLocalPdxType != null) {
            needToTrackReads = false;
        } else {
            pdxReader = new TrackingPdxReaderImpl(this, tr, pdxClass);
        }
    }
    Object result;
    if (PdxSerializable.class.isAssignableFrom(pdxClass)) {
        try {
            result = pdxClass.newInstance();
        } catch (Exception e) {
            PdxSerializationException ex = new PdxSerializationException(LocalizedStrings.DataSerializer_COULD_NOT_CREATE_AN_INSTANCE_OF_A_CLASS_0.toLocalizedString(pdxClassName), e);
            throw ex;
        }
        ((PdxSerializable) result).fromData(pdxReader);
    } else {
        PdxSerializer pdxSerializer = cache.getPdxSerializer();
        if (pdxSerializer != null) {
            result = pdxSerializer.fromData(pdxClass, pdxReader);
            if (result == null) {
                throw new PdxSerializationException("Could not deserialize pdx because the pdx serializer's fromData returned false for a pdx of class " + pdxClassName);
            }
        } else {
            throw new PdxSerializationException("Could not deserialize pdx because a PdxSerializer does not exist.");
        }
    }
    {
        PdxUnreadData ud = getReadUnreadFieldsCalled();
        if (ud != null) {
            // User called PdxReader.readUnreadFields()
            if (unreadLocalPdxType != null) {
                if (unreadLocalPdxType.getUnreadFieldIndexes() != null) {
                    ud.initialize(unreadLocalPdxType, this);
                }
            } else if (needToTrackReads) {
                ((TrackingPdxReaderImpl) pdxReader).internalReadUnreadFields(ud);
            }
        } else {
            if (needToTrackReads) {
                ud = ((TrackingPdxReaderImpl) pdxReader).internalReadUnreadFields(new PdxUnreadData());
                if (ud != null && !ud.isEmpty()) {
                    tr.putUnreadData(result, ud);
                }
            } else if (unreadLocalPdxType != null) {
                if (unreadLocalPdxType.getUnreadFieldIndexes() != null) {
                    tr.putUnreadData(result, new PdxUnreadData(unreadLocalPdxType, this));
                }
            }
        }
    }
    return result;
}