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/*
 * Copyright (c) 2012, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.utilities;

import java.io.BufferedReader;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import athenz.shade.zts.athenz.shade.zts.javax.inject.Singleton;

import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.ClassAnalyzer;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.Descriptor;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DescriptorType;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DescriptorVisibility;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.HK2Loader;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.PerLookup;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.utilities.general.GeneralUtilities;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.utilities.reflection.ReflectionHelper;

/**
 * The implementation of the descriptor itself, with the
 * bonus of being externalizable, and having writeable fields
 * 
 * @author jwells
 */
public class DescriptorImpl implements Descriptor, Externalizable {
    /**
     * For serialization
     */
    private static final long serialVersionUID = 1558442492395467828L;
    
    private final static String CONTRACT_KEY = "contract=";
    private final static String NAME_KEY = "name=";
    private final static String SCOPE_KEY = "scope=";
    private final static String QUALIFIER_KEY = "qualifier=";
    private final static String TYPE_KEY = "type=";
    private final static String VISIBILITY_KEY = "visibility=";
    private final static String METADATA_KEY = "metadata=";
    private final static String RANKING_KEY = "rank=";
    private final static String PROXIABLE_KEY = "proxiable=";
    private final static String PROXY_FOR_SAME_SCOPE_KEY = "proxyForSameScope=";
    private final static String ANALYSIS_KEY = "analysis=";
    private final static String PROVIDE_METHOD_DT = "PROVIDE";
    private final static String LOCAL_DT = "LOCAL";
    private final static String START_START = "[";
    private final static String END_START = "]";
    private final static char END_START_CHAR = ']';
    private final static String SINGLETON_DIRECTIVE = "S";
    private final static String NOT_IN_CONTRACTS_DIRECTIVE = "-";
    private final static char SINGLETON_DIRECTIVE_CHAR = 'S';
    private final static char NOT_IN_CONTRACTS_DIRECTIVE_CHAR = '-';
    
    private final static Set EMPTY_CONTRACTS_SET = Collections.emptySet();
    private final static Set EMPTY_QUALIFIER_SET = Collections.emptySet();
    private final static Map> EMPTY_METADATAS_MAP = Collections.emptyMap();
	
	private Set contracts;
	private String implementation;
	private String name;
	private String scope = PerLookup.class.getName();
	private Map> metadatas;
	private Set qualifiers;
	private DescriptorType descriptorType = DescriptorType.CLASS;
	private DescriptorVisibility descriptorVisibility = DescriptorVisibility.NORMAL;
	private transient HK2Loader loader;
	private int rank;
	private Boolean proxiable;
	private Boolean proxyForSameScope;
	private String analysisName;
	private Long id;
	private Long locatorId;
	
	/**
	 * For serialization
	 */
	public DescriptorImpl() {	
	}
	
	/**
	 * Does a deep copy of the incoming descriptor
	 * 
	 * @param copyMe The descriptor to copy
	 */
	public DescriptorImpl(Descriptor copyMe) {
	    name = copyMe.getName();
        scope = copyMe.getScope();
        implementation = copyMe.getImplementation();
        descriptorType = copyMe.getDescriptorType();
        descriptorVisibility = copyMe.getDescriptorVisibility();
        loader = copyMe.getLoader();
        rank = copyMe.getRanking();
        proxiable = copyMe.isProxiable();
        proxyForSameScope = copyMe.isProxyForSameScope();
        id = copyMe.getServiceId();
        locatorId = copyMe.getLocatorId();
        analysisName = copyMe.getClassAnalysisName();
        
	    if (copyMe.getAdvertisedContracts() != null && !copyMe.getAdvertisedContracts().isEmpty()) {
	        contracts = new LinkedHashSet();
	        contracts.addAll(copyMe.getAdvertisedContracts());
	    }
		
	    if (copyMe.getQualifiers() != null && !copyMe.getQualifiers().isEmpty()) {
	        qualifiers = new LinkedHashSet();
		    qualifiers.addAll(copyMe.getQualifiers());
	    }
		
	    if (copyMe.getMetadata() != null && !copyMe.getMetadata().isEmpty()) {
	        metadatas = new LinkedHashMap>();
		    metadatas.putAll(ReflectionHelper.deepCopyMetadata(copyMe.getMetadata()));
	    }
	}
	
	/**
	 * This creates this descriptor impl, taking all of the fields
	 * as given
	 * 
	 * @param contracts The set of contracts this descriptor impl should advertise (should not be null)
	 * @param name The name of this descriptor (may be null)
	 * @param scope The scope of this descriptor.  If null PerLookup is assumed
	 * @param implementation The name of the implementation class (should not be null)
	 * @param metadatas The metadata associated with this descriptor (should not be null)
	 * @param qualifiers The set of qualifiers associated with this descriptor (should not be null)
	 * @param descriptorType The type of this descriptor (should not be null)
	 * @param descriptorVisibility The visibility this descriptor should have
	 * @param loader The HK2Loader to associated with this descriptor (may be null)
	 * @param rank The rank to initially associate with this descriptor
	 * @param proxiable The proxiable value to associate with this descriptor (may be null)
	 * @param proxyForSameScope The proxyForSameScope value to associate with this descriptor (may be null)
	 * @param analysisName The name of the ClassAnalysis service to use
	 * @param id The ID this descriptor should take (may be null)
	 * @param locatorId The locator ID this descriptor should take (may be null)
	 */
	public DescriptorImpl(
	        Set contracts,
			String name,
			String scope,
			String implementation,
			Map> metadatas,
			Set qualifiers,
			DescriptorType descriptorType,
			DescriptorVisibility descriptorVisibility,
			HK2Loader loader,
			int rank,
			Boolean proxiable,
			Boolean proxyForSameScope,
			String analysisName,
			Long id,
			Long locatorId) {
	    if (contracts != null && !contracts.isEmpty()) {
	        this.contracts = new LinkedHashSet();
		    this.contracts.addAll(contracts);
	    }
		
		this.implementation = implementation;
		
		this.name = name;
		this.scope = scope;
		if (metadatas != null && !metadatas.isEmpty()) {
		    this.metadatas = new LinkedHashMap>();
		    this.metadatas.putAll(ReflectionHelper.deepCopyMetadata(metadatas));
		}
		if (qualifiers != null && !qualifiers.isEmpty()) {
		    this.qualifiers = new LinkedHashSet();
		    this.qualifiers.addAll(qualifiers);
		    
		}
		this.descriptorType = descriptorType;
		this.descriptorVisibility = descriptorVisibility;
		this.id = id;
		this.rank = rank;
		this.proxiable = proxiable;
		this.proxyForSameScope = proxyForSameScope;
		this.analysisName = analysisName;
		this.locatorId = locatorId;
		this.loader = loader;
	}
	
	@Override
	public synchronized Set getAdvertisedContracts() {
	    if (contracts == null) return EMPTY_CONTRACTS_SET;
		return Collections.unmodifiableSet(contracts);
	}
	
	/**
	 * Adds an advertised contract to the set of contracts advertised by this descriptor
	 * @param addMe The contract to add.  May not be null
	 */
	public synchronized void addAdvertisedContract(String addMe) {
	    if (addMe == null) return;
	    if (contracts == null) contracts = new LinkedHashSet();
	    contracts.add(addMe);
	}
	
	/**
	 * Removes an advertised contract from the set of contracts advertised by this descriptor
	 * @param removeMe The contract to remove.  May not be null
	 * @return true if removeMe was removed from the set
	 */
	public synchronized boolean removeAdvertisedContract(String removeMe) {
	    if (removeMe == null || contracts == null) return false;
	    return contracts.remove(removeMe);
	}

	@Override
	public synchronized String getImplementation() {
		return implementation;
	}
	
	/**
	 * Sets the implementation
	 * @param implementation The implementation this descriptor should have
	 */
    public synchronized void setImplementation(String implementation) {
        this.implementation = implementation;
    }

	@Override
	public synchronized String getScope() {
		return scope;
	}
	
	/**
	 * Sets the scope this descriptor should have
	 * @param scope The scope of this descriptor
	 */
	public synchronized void setScope(String scope) {
	    this.scope = scope;
	}

	@Override
	public synchronized String getName() {
		return name;
	}
	
	/**
	 * Sets the name this descriptor should have
	 * @param name The name for this descriptor
	 */
	public synchronized void setName(String name) {
	    this.name = name;
	}

	@Override
	public synchronized Set getQualifiers() {
	    if (qualifiers == null) return EMPTY_QUALIFIER_SET;
		return Collections.unmodifiableSet(qualifiers);
	}
	
	/**
	 * Adds the given string to the list of qualifiers
	 * 
	 * @param addMe The fully qualified class name of the qualifier to add.  May not be null
	 */
	public synchronized void addQualifier(String addMe) {
	    if (addMe == null) return;
	    if (qualifiers == null) qualifiers = new LinkedHashSet();
	    qualifiers.add(addMe);
	}
	
	/**
	 * Removes the given qualifier from the list of qualifiers
	 * 
	 * @param removeMe The fully qualifier class name of the qualifier to remove.  May not be null
	 * @return true if the given qualifier was removed
	 */
	public synchronized boolean removeQualifier(String removeMe) {
	    if (removeMe == null) return false;
	    if (qualifiers == null) return false;
	    return qualifiers.remove(removeMe);
	}

    @Override
    public synchronized DescriptorType getDescriptorType() {
        return descriptorType;
    }
    
    /**
     * Sets the descriptor type
     * @param descriptorType The descriptor type.  May not be null
     */
    public synchronized void setDescriptorType(DescriptorType descriptorType) {
        if (descriptorType == null) throw new IllegalArgumentException();
        this.descriptorType = descriptorType;
    }
    
    @Override
    public synchronized DescriptorVisibility getDescriptorVisibility() {
        return descriptorVisibility;
    }
    
    /**
     * Sets the descriptor visilibity
     * @param descriptorVisibility The visibility this descriptor should have
     */
    public synchronized void setDescriptorVisibility(DescriptorVisibility descriptorVisibility) {
        if (descriptorVisibility == null) throw new IllegalArgumentException();
        this.descriptorVisibility = descriptorVisibility;
    }

	@Override
	public synchronized Map> getMetadata() {
	    if (metadatas == null) return EMPTY_METADATAS_MAP;
		return Collections.unmodifiableMap(metadatas);
	}
	
	/**
	 * Sets the metadata of this DescriptorImpl to exactly the set
	 * of metadata in the incoming map.  Any previous metadata values
	 * will be removed.  A deep copy of the incoming map will be made,
	 * so it is safe to use the input map after use of this API
	 * 
	 * @param metadata The non-null metadata that this descriptor
	 * should have
	 */
	public synchronized void setMetadata(Map> metadata) {
	    if (metadatas == null) {
	        metadatas = new LinkedHashMap>();
	    }
	    else {
	        metadatas.clear();
	    }
	    
	    metadatas.putAll(ReflectionHelper.deepCopyMetadata(metadata));
	}
	
	/**
	 * Adds all of the entries from this map to the existing descriptor's
	 * metadata.  None of the keys in the map may have the '=' character
	 * 
	 * @param metadata The non-null but possibly empty list of fields
	 * to add to the metadata map
	 */
	public synchronized void addMetadata(Map> metadata) {
	    if (metadatas == null) metadatas = new LinkedHashMap>();
	    
        metadatas.putAll(ReflectionHelper.deepCopyMetadata(metadata));
    }
	
	/**
	 * Adds a value to the list of values associated with this key
	 * 
	 * @param key The key to which to add the value.  May not be null.  May
	 * not contain the character '='
	 * @param value The value to add.  May not be null
	 */
	public synchronized void addMetadata(String key, String value) {
	    if (metadatas == null) metadatas = new LinkedHashMap>();
	    ReflectionHelper.addMetadata(metadatas, key, value);
	}
	
	/**
	 * Removes the given value from the given key
	 * 
	 * @param key The key of the value to remove.  May not be null, and
	 * may not contain the character '='
	 * @param value The value to remove.  May not be null
	 * @return true if the value was removed
	 */
	public synchronized boolean removeMetadata(String key, String value) {
	    if (metadatas == null) return false;
	    return ReflectionHelper.removeMetadata(metadatas, key, value);
	}
	
	/**
	 * Removes all the metadata values associated with key
	 * 
	 * @param key The key of the metadata values to remove
	 * @return true if any value was removed
	 */
	public synchronized boolean removeAllMetadata(String key) {
	    if (metadatas == null) return false;
	    return ReflectionHelper.removeAllMetadata(metadatas, key);
	}
	
	/**
     * Removes all metadata values
     */
    public synchronized void clearMetadata() {
        metadatas = null;
    }
	
	/* (non-Javadoc)
     * @see athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.Descriptor#getLoader()
     */
    @Override
    public synchronized HK2Loader getLoader() {
        return loader;
    }
    
    /**
     * Sets the loader to use with this descriptor
     * @param loader The loader to use with this descriptor
     */
    public synchronized void setLoader(HK2Loader loader) {
        this.loader = loader;
    }

    @Override
    public synchronized int getRanking() {
        return rank;
    }
    
    /* (non-Javadoc)
     * @see athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.Descriptor#setRanking(int)
     */
    @Override
    public synchronized int setRanking(int ranking) {
        int retVal = rank;
        rank = ranking;
        return retVal;
    }
	
	@Override
	public synchronized Long getServiceId() {
		return id;
	}
	
	/**
	 * Sets the service id for this descriptor
	 * @param id the service id for this descriptor
	 */
	public synchronized void setServiceId(Long id) {
	    this.id = id;
	}
	
	@Override
	public Boolean isProxiable() {
	    return proxiable;
	}
	
	/**
	 * Sets whether or not this descriptor should be proxied
	 * @param proxiable if true then this descriptor will be proxied.
	 * If false then this descriptor will not be proxied.  If null
	 * this descriptor will follow the rules of the scope it is in
	 */
	public void setProxiable(Boolean proxiable) {
	    this.proxiable = proxiable;
	}
	
	@Override
    public Boolean isProxyForSameScope() {
        return proxyForSameScope;
    }
	
	/**
	 * Sets whether or not to proxy this descriptor for other
	 * services in the same scope
	 * 
	 * @param proxyForSameScope if true then this descriptor will be proxied
	 * for services in the same scope.  If false then this descriptor will not
	 * be proxied for services in the same scope.  If null
     * this descriptor will follow the rules of the scope it is in
	 */
	public void setProxyForSameScope(Boolean proxyForSameScope) {
        this.proxyForSameScope = proxyForSameScope;
    }
	
	@Override
    public String getClassAnalysisName() {
        return analysisName;
    }
	
	/**
	 * Sets the name of the service that will be used
	 * to analyze this class
	 * 
	 * @param name The name of the {@link ClassAnalyzer}
	 * service that should be used to analyze this
	 * descriptor
	 */
	public void setClassAnalysisName(String name) {
	    analysisName = name;
	}
	
	@Override
	public synchronized Long getLocatorId() {
	    return locatorId;
	}
	
	/**
	 * Sets the locator id for this descriptor
	 * @param locatorId the locator id for this descriptor
	 */
	public synchronized void setLocatorId(Long locatorId) {
	    this.locatorId = locatorId;
	}
	
	public int hashCode() {
	    int retVal = 0;
	    
	    if (implementation != null) {
	        retVal ^= implementation.hashCode();
	    }
	    if (contracts != null) {
	        for (String contract : contracts) {
	            retVal ^= contract.hashCode();
	        }
	    }
	    if (name != null) {
	        retVal ^= name.hashCode();
	    }
	    if (scope != null) {
	        retVal ^= scope.hashCode();
	    }
	    if (qualifiers != null) {
	        for (String qualifier : qualifiers) {
	            retVal ^= qualifier.hashCode();
	        }
	    }
	    if (descriptorType != null) {
	        retVal ^= descriptorType.hashCode();
	    }
	    if (descriptorVisibility != null) {
            retVal ^= descriptorVisibility.hashCode();
        }
	    if (metadatas != null) {
	        for (Map.Entry> entries : metadatas.entrySet()) {
	            retVal ^= entries.getKey().hashCode();
	            
	            for (String value : entries.getValue()) {
	                retVal ^= value.hashCode();
	            }
	        }
	    }
	    if (proxiable != null) {
	        if (proxiable.booleanValue()) {
	            retVal ^= 1;
	        }
	        else {
	            retVal ^= -1;
	        }
	    }
	    if (proxyForSameScope != null) {
            if (proxyForSameScope.booleanValue()) {
                retVal ^= 2;
            }
            else {
                retVal ^= -2;
            }
        }
	    if (analysisName != null) {
	        retVal ^= analysisName.hashCode();
	    }
	    
	    return retVal;
	}
	
	private static  boolean equalOrderedCollection(Collection a, Collection b) {
	    if (a == b) return true;
	    if (a == null) return false;
	    if (b == null) return false;
	    
	    if (a.size() != b.size()) return false;
	    
	    Object aAsArray[] = a.toArray();
	    Object bAsArray[] = b.toArray();
	    
	    for (int lcv = 0; lcv < a.size(); lcv++) {
	        if (!GeneralUtilities.safeEquals(aAsArray[lcv], bAsArray[lcv])) return false;
	    }
	    
	    return true;
	}
	
	private static  boolean equalMetadata(Map> a, Map> b) {
        if (a == b) return true;
        if (a == null) return false;
        if (b == null) return false;
        
        if (a.size() != b.size()) return false;
        
        for (Map.Entry> entry : a.entrySet()) {
            String aKey = entry.getKey();
            List aValue = entry.getValue();
            
            List bValue = b.get(aKey);
            if (bValue == null) return false;
            
            if (!equalOrderedCollection(aValue, bValue)) return false;
        }
        
        return true;
    }
	
	/**
	 * Tests if two descriptors are equal not taking into account the locator-id
	 * and server-id by comparing the following fields:
	 * 
    *
  • implementation
  • *
  • contracts
  • *
  • name
  • *
  • scope
  • *
  • qualifiers
  • *
  • descriptorType
  • *
  • descriptorVisibility
  • *
  • metadata
  • *
  • proxiable
  • *
  • proxyForSameScope
  • *
  • analysisName
  • *
* * @param a The possibly null descriptor to compare * @param b The possibly null descriptor to compare * @return true if they are the same, false otherwise */ public static boolean descriptorEquals(Descriptor a, Descriptor b) { if (a == null && b == null) return true; if (a == null || b == null) return false; if (!GeneralUtilities.safeEquals(a.getImplementation(), b.getImplementation())) return false; if (!equalOrderedCollection(a.getAdvertisedContracts(), b.getAdvertisedContracts())) return false; if (!GeneralUtilities.safeEquals(a.getName(), b.getName())) return false; if (!GeneralUtilities.safeEquals(a.getScope(), b.getScope())) return false; if (!equalOrderedCollection(a.getQualifiers(), b.getQualifiers())) return false; if (!GeneralUtilities.safeEquals(a.getDescriptorType(), b.getDescriptorType())) return false; if (!GeneralUtilities.safeEquals(a.getDescriptorVisibility(), b.getDescriptorVisibility())) return false; if (!equalMetadata(a.getMetadata(), b.getMetadata())) return false; if (!GeneralUtilities.safeEquals(a.isProxiable(), b.isProxiable())) return false; if (!GeneralUtilities.safeEquals(a.isProxyForSameScope(), b.isProxyForSameScope())) return false; if (!GeneralUtilities.safeEquals(a.getClassAnalysisName(), b.getClassAnalysisName())) return false; return true; } /** * This equals matches only if the following fields of the descriptor match: *
    *
  • implementation
  • *
  • contracts
  • *
  • name
  • *
  • scope
  • *
  • qualifiers
  • *
  • descriptorType
  • *
  • descriptorVisibility
  • *
  • metadata
  • *
  • proxiable
  • *
  • proxyForSameScope
  • *
  • analysisName
  • *
* @param a The object to compare to this one. May be null (which will result in a false) * @return true if the descriptors are equal */ public boolean equals(Object a) { if (a == null) return false; if (!(a instanceof Descriptor)) return false; Descriptor d = (Descriptor) a; return descriptorEquals(this, d); } /** * Will pretty print a descriptor * * @param sb The string buffer put the pretty print into * @param d The descriptor to write */ public static void pretty(StringBuffer sb, Descriptor d) { if (sb == null || d == null) return; sb.append("\n\timplementation=" + d.getImplementation()); if (d.getName() != null) { sb.append("\n\tname=" + d.getName()); } sb.append("\n\tcontracts="); sb.append(ReflectionHelper.writeSet(d.getAdvertisedContracts())); sb.append("\n\tscope=" + d.getScope()); sb.append("\n\tqualifiers="); sb.append(ReflectionHelper.writeSet(d.getQualifiers())); sb.append("\n\tdescriptorType=" + d.getDescriptorType()); sb.append("\n\tdescriptorVisibility=" + d.getDescriptorVisibility()); sb.append("\n\tmetadata="); sb.append(ReflectionHelper.writeMetadata(d.getMetadata())); sb.append("\n\trank=" + d.getRanking()); sb.append("\n\tloader=" + d.getLoader()); sb.append("\n\tproxiable=" + d.isProxiable()); sb.append("\n\tproxyForSameScope=" + d.isProxyForSameScope()); sb.append("\n\tanalysisName=" + d.getClassAnalysisName()); sb.append("\n\tid=" + d.getServiceId()); sb.append("\n\tlocatorId=" + d.getLocatorId()); sb.append("\n\tidentityHashCode=" + System.identityHashCode(d)); } public synchronized String toString() { StringBuffer sb = new StringBuffer("Descriptor("); pretty(sb, this); sb.append(")"); return sb.toString(); } /** * This writes this object to the data output stream in a human-readable * format, excellent for writing out data files * * @param out The output stream to write this object out to * @throws IOException on failure */ public void writeObject(PrintWriter out) throws IOException { out.print(START_START); // Implementation if (implementation != null) { out.print(implementation); } out.print(END_START); if (scope != null && scope.equals(Singleton.class.getName())) { out.print(SINGLETON_DIRECTIVE); } boolean implementationInContracts = true; if (contracts != null && implementation != null && !contracts.contains(implementation)) { out.print(NOT_IN_CONTRACTS_DIRECTIVE); implementationInContracts = false; } out.println(); // Contracts if (contracts != null && !contracts.isEmpty() && (!implementationInContracts || (contracts.size() > 1))) { String excluded = (implementationInContracts) ? implementation : null ; out.println(CONTRACT_KEY + ReflectionHelper.writeSet(contracts, excluded)); } if (name != null) { out.println(NAME_KEY + name); } if ((scope != null) && !( scope.equals(PerLookup.class.getName()) || scope.equals(Singleton.class.getName()))) { out.println(SCOPE_KEY + scope); } if (qualifiers != null && !qualifiers.isEmpty()) { out.println(QUALIFIER_KEY + ReflectionHelper.writeSet(qualifiers)); } if (descriptorType != null && descriptorType.equals(DescriptorType.PROVIDE_METHOD)) { out.println(TYPE_KEY + PROVIDE_METHOD_DT); } if (descriptorVisibility != null && descriptorVisibility.equals(DescriptorVisibility.LOCAL)) { out.println(VISIBILITY_KEY + LOCAL_DT); } if (rank != 0) { out.println(RANKING_KEY + rank); } if (proxiable != null) { out.println(PROXIABLE_KEY + proxiable.booleanValue()); } if (proxyForSameScope != null) { out.println(PROXY_FOR_SAME_SCOPE_KEY + proxyForSameScope.booleanValue()); } if (analysisName != null && !ClassAnalyzer.DEFAULT_IMPLEMENTATION_NAME.equals(analysisName)) { out.println(ANALYSIS_KEY + analysisName); } if (metadatas != null && !metadatas.isEmpty()) { out.println(METADATA_KEY + ReflectionHelper.writeMetadata(metadatas)); } out.println(); // This demarks the end of the section } private void reinitialize() { contracts = null; implementation = null; name = null; scope = PerLookup.class.getName(); metadatas = null; qualifiers = null; descriptorType = DescriptorType.CLASS; descriptorVisibility = DescriptorVisibility.NORMAL; loader = null; rank = 0; proxiable = null; proxyForSameScope = null; analysisName = null; id = null; locatorId = null; } /** * This can be used to read in instances of this object that were previously written out with * writeObject. Useful for reading from external data files * * @param in The reader to read from * @return true if a descriptor was read, false otherwise. This is useful if reading a file that might have comments at the end * @throws IOException on failure */ public boolean readObject(BufferedReader in) throws IOException { // Reinitialize all fields reinitialize(); String line = in.readLine(); boolean sectionStarted = false; while (line != null) { String trimmed = line.trim(); if (!sectionStarted) { if (trimmed.startsWith(START_START)) { sectionStarted = true; int endStartIndex = trimmed.indexOf(END_START_CHAR, 1); if (endStartIndex < 0) { throw new IOException("Start of implementation ends without ] character: " + trimmed); } if (endStartIndex > 1) { implementation = trimmed.substring(1, endStartIndex); } String directives = trimmed.substring(endStartIndex + 1); boolean doesNotContainImplementation = false; if (directives != null) { for (int lcv = 0; lcv < directives.length(); lcv++) { char charAt = directives.charAt(lcv); if (charAt == SINGLETON_DIRECTIVE_CHAR) { scope = Singleton.class.getName(); } else if (charAt == NOT_IN_CONTRACTS_DIRECTIVE_CHAR) { doesNotContainImplementation = true; } } } if (!doesNotContainImplementation && (implementation != null)) { if (contracts == null) contracts = new LinkedHashSet(); contracts.add(implementation); } } } else { if (trimmed.length() <= 0) { // A blank line indicates end of object return true; } int equalsIndex = trimmed.indexOf('='); if (equalsIndex >= 1) { String leftHandSide = trimmed.substring(0, equalsIndex + 1); // include the = String rightHandSide = trimmed.substring(equalsIndex + 1); if (leftHandSide.equalsIgnoreCase(CONTRACT_KEY)) { if (contracts == null) contracts = new LinkedHashSet(); ReflectionHelper.readSet(rightHandSide, contracts); } else if (leftHandSide.equals(QUALIFIER_KEY)) { LinkedHashSet localQualifiers = new LinkedHashSet(); ReflectionHelper.readSet(rightHandSide, localQualifiers); if (!localQualifiers.isEmpty()) qualifiers = localQualifiers; } else if (leftHandSide.equals(NAME_KEY)) { name = rightHandSide; } else if (leftHandSide.equals(SCOPE_KEY)) { scope = rightHandSide; } else if (leftHandSide.equals(TYPE_KEY)) { if (rightHandSide.equals(PROVIDE_METHOD_DT)) { descriptorType = DescriptorType.PROVIDE_METHOD; } } else if (leftHandSide.equals(VISIBILITY_KEY)) { if (rightHandSide.equals(LOCAL_DT)) { descriptorVisibility = DescriptorVisibility.LOCAL; } } else if (leftHandSide.equals(METADATA_KEY)) { LinkedHashMap> localMetadatas = new LinkedHashMap>(); ReflectionHelper.readMetadataMap(rightHandSide, localMetadatas); if (!localMetadatas.isEmpty()) metadatas = localMetadatas; } else if (leftHandSide.equals(RANKING_KEY)) { rank = Integer.parseInt(rightHandSide); } else if (leftHandSide.equals(PROXIABLE_KEY)) { proxiable = Boolean.parseBoolean(rightHandSide); } else if (leftHandSide.equals(PROXY_FOR_SAME_SCOPE_KEY)) { proxyForSameScope = Boolean.parseBoolean(rightHandSide); } else if (leftHandSide.equals(ANALYSIS_KEY)) { analysisName = rightHandSide; } // Otherwise it is an unknown type, just forget it } } line = in.readLine(); } return sectionStarted; } @Override public void writeExternal(ObjectOutput out) throws IOException { StringWriter sw = new StringWriter(); writeObject(new PrintWriter(sw)); out.writeObject(sw.toString()); } @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { String descriptorString = (String) in.readObject(); readObject(new BufferedReader( new StringReader(descriptorString))); } }




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