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/*
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.teiid.adminapi.impl;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.teiid.adminapi.Model;
import org.teiid.adminapi.impl.ModelMetaData.Message.Severity;
import org.teiid.core.util.Assertion;
import org.teiid.core.util.CopyOnWriteLinkedHashMap;


public class ModelMetaData extends AdminObjectImpl implements Model {
	
	private static final int DEFAULT_ERROR_HISTORY = 10;
	private static final String SUPPORTS_MULTI_SOURCE_BINDINGS_KEY_OLD = "supports-multi-source-bindings"; //$NON-NLS-1$
	private static final String SUPPORTS_MULTI_SOURCE_BINDINGS_KEY = "multisource"; //$NON-NLS-1$
	private static final long serialVersionUID = 3714234763056162230L;
		
	protected Map sources = new CopyOnWriteLinkedHashMap();	
	protected String modelType = Type.PHYSICAL.name();
	protected String description;	
	protected String path; 
    protected boolean visible = true;
    protected List messages;
    protected transient List runtimeMessages;
    protected List sourceMetadataType = new ArrayList();
	protected List sourceMetadataText = new ArrayList();
	protected MetadataStatus metadataStatus = MetadataStatus.LOADING;

	@Override
	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}	
	
	@Override
    public boolean isSource() {
		return getModelType() == Model.Type.PHYSICAL;
	}

	@Override
	public boolean isVisible() {
		return this.visible;
	}

	@Override
	public Type getModelType() {
		try {
			return Type.valueOf(modelType);
		} catch(IllegalArgumentException e) {
			return Type.OTHER;
		}
	}
	
    public String getPath() {
		return path;
	}

	public void setPath(String path) {
		this.path = path;
	}	

	@Override
    public boolean isSupportsMultiSourceBindings() {
		return this.isSource() && 
				(this.sources.size() > 1 || Boolean.parseBoolean(getPropertyValue(SUPPORTS_MULTI_SOURCE_BINDINGS_KEY)) || Boolean.parseBoolean(getPropertyValue(SUPPORTS_MULTI_SOURCE_BINDINGS_KEY_OLD)));
    }    
	
    public void setSupportsMultiSourceBindings(boolean supports) {
        addProperty(SUPPORTS_MULTI_SOURCE_BINDINGS_KEY, Boolean.toString(supports));
    }

    public void setModelType(Model.Type modelType) {
        this.modelType = modelType.name();
    }
    
    public void setModelType(String modelType) {
    	if (modelType != null) {
    		this.modelType = modelType.toUpperCase();
    	} else {
    		this.modelType = null;
    	}
    }    
    
	@Override
	public MetadataStatus getMetadataStatus() {
		return metadataStatus;
	}

    public void setMetadataStatus(Model.MetadataStatus status) {
        this.metadataStatus = status;
    }
    
    public void setMetadataStatus(String status) {
    	if (status != null) {
    		this.metadataStatus = Model.MetadataStatus.valueOf(status);
    	}
    }
    
    public String toString() {
		return getName() + this.sources;
    }
    
    public void setVisible(boolean value) {
    	this.visible = value;
    }    

	public Collection getSourceMappings(){
		return this.sources.values();
	}
	
	public Map getSources() {
		return sources;
	}
	
	public SourceMappingMetadata getSourceMapping(String sourceName){
		return this.sources.get(sourceName);
	}	
    
	public void setSourceMappings(List sources){
		this.sources.clear();
		for (SourceMappingMetadata source: sources) {
			addSourceMapping(source.getName(), source.getTranslatorName(), source.getConnectionJndiName());
		}
	}      
    
    @Override
    public List getSourceNames() {
    	return new ArrayList(this.sources.keySet());
	}
    
    @Override
    public String getSourceConnectionJndiName(String sourceName) {
    	SourceMappingMetadata s = this.sources.get(sourceName);
    	if (s == null) {
    		return null;
    	}
    	return s.getConnectionJndiName();
	}
    
    @Override
    public String getSourceTranslatorName(String sourceName) {
    	SourceMappingMetadata s = this.sources.get(sourceName);
    	if (s == null) {
    		return null;
    	}
    	return s.getTranslatorName();
	}    
    
	public SourceMappingMetadata addSourceMapping(String name, String translatorName, String connJndiName) {
		return this.sources.put(name, new SourceMappingMetadata(name, translatorName, connJndiName));
	}
	
	public void addSourceMapping(SourceMappingMetadata source) {
		this.addSourceMapping(source.getName(), source.getTranslatorName(), source.getConnectionJndiName());
	}
	
	public synchronized boolean hasErrors() {
		if (this.messages != null) {
			for (Message error : this.messages) {
				if (error.getSeverity() == Severity.ERROR) {
					return true;
				}
			}
		}
		if (this.runtimeMessages != null) {
			for (Message error : this.runtimeMessages) {
				if (error.getSeverity() == Severity.ERROR) {
					return true;
				}
			}
		}
		return false;	
	}
	
	public synchronized List getMessages(){
		return getMessages(true);
	}	
	
	public synchronized List getMessages(boolean includeRuntime){
		if (this.messages == null && this.runtimeMessages == null) {
			return Collections.emptyList();
		}
		List list = new ArrayList();
		if (this.messages != null) {
			list.addAll(messages);
		}
		if (includeRuntime && this.runtimeMessages != null) {
			list.addAll(runtimeMessages);
		}
		return list;
	}
	
    public Message addMessage(String severity, String message) {
        Message ve = new Message(Severity.valueOf(severity), message);
        addMessage(ve);
        return ve;
    }
    
	public synchronized boolean hasRuntimeMessages(){
		return this.runtimeMessages != null && !this.runtimeMessages.isEmpty();
	}    
    
    public synchronized Message addRuntimeError(String message) {
    	return addRuntimeMessage(Severity.ERROR, message);
    }    
    
    public synchronized Message addRuntimeMessage(Severity severity, String message) {
        Message ve = new Message(severity, message);
        if (this.runtimeMessages == null) {
            this.runtimeMessages = new LinkedList();
        }
        this.runtimeMessages.add(ve);
        if (this.runtimeMessages.size() > DEFAULT_ERROR_HISTORY) {
        	this.runtimeMessages.remove(0);
        }
        return ve;
    } 
    
    public synchronized Message addMessage(Message ve) {
        if (this.messages == null) {
            this.messages = new LinkedList();
        }
        this.messages.add(ve);
        return ve;
    }
    
    public synchronized void clearRuntimeMessages() {
		runtimeMessages = null;
    }  
    
    public synchronized void clearMessages() {
    	clearRuntimeMessages();
    	this.messages = null;
    } 
	
    public static class Message implements Serializable{
		private static final long serialVersionUID = 2044197069467559527L;

		public enum Severity {ERROR, WARNING, INFO};
    	
        protected String value;
        protected Severity severity;
        protected String path;
        
		public Message() {};
        
        public Message(Severity severity, String msg) {
        	this.severity = severity;
        	Assertion.isNotNull(msg);
        	this.value = msg;
        }
    	
        public String getValue() {
			return value;
		}

		public void setValue(String value) {
			Assertion.isNotNull(value);
			this.value = value;
		}

		public Severity getSeverity() {
			return severity;
		}

		public void setSeverity(Severity severity) {
			this.severity = severity;
		}       
		
        public String getPath() {
			return path;
		}

		public void setPath(String path) {
			this.path = path;
		}		

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Message other = (Message) obj;
			if (severity == null) {
				if (other.severity != null)
					return false;
			} else if (!severity.equals(other.severity))
				return false;
			if (value == null) {
				if (other.value != null)
					return false;
			} else if (!value.equals(other.value))
				return false;
			return true;
		}		
    }
    
    public void addSourceMetadata(String type, String text) {
    	this.sourceMetadataType.add(type);
    	this.sourceMetadataText.add(text);
    }

    /**
     * @see #getSourceMetadataType()
     */
    @Deprecated
    public String getSchemaSourceType() {
    	if (!sourceMetadataType.isEmpty()) {
    		return sourceMetadataType.get(0);
    	}
    	return null;
	}

    /**
     * @see #addSourceMetadata(String, String)
     */
    @Deprecated
	public void setSchemaSourceType(String schemaSourceType) {
		if (!sourceMetadataType.isEmpty()) {
			sourceMetadataType.set(0, schemaSourceType);
		} else {
			sourceMetadataType.add(schemaSourceType);
		}
	}

    /**
     * @see #getSourceMetadataText()
     */
    @Deprecated
	public String getSchemaText() {
		if (!sourceMetadataText.isEmpty()) {
    		return sourceMetadataText.get(0);
    	}
    	return null;
	}

    /**
     * @see #addSourceMetadata(String, String)
     */
    @Deprecated
	public void setSchemaText(String schemaText) {
		if (!sourceMetadataText.isEmpty()) {
			sourceMetadataText.set(0, schemaText);
		} else {
			sourceMetadataText.add(schemaText);
		}
	}
    
    public List getSourceMetadataType() {
		return sourceMetadataType;
	}
    
    public List getSourceMetadataText() {
		return sourceMetadataText;
	}
	
	@Override
	public List getValidityErrors() {
		List allErrors = new ArrayList();
		List errors = getMessages();
		if (errors != null && !errors.isEmpty()) {
			for (Message m:errors) {
				if (m.getSeverity() == Severity.ERROR) {
					allErrors.add(m.getValue());
				}
			}
		}
		return allErrors;
	}
	
	
	
}




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