| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.mina.integration.beans; |
| |
| import java.beans.PropertyEditor; |
| import java.text.MessageFormat; |
| import java.util.Collection; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * A {@link PropertyEditor} which converts a {@link String} into |
| * a {@link Collection} and vice versa. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class MapEditor extends AbstractPropertyEditor { |
| static final Pattern ELEMENT = Pattern.compile("([,\\s]+)|" |
| + // Entry delimiter |
| "(\\s*=\\s*)|" |
| + // Key-Value delimiter |
| "(?<=\")((?:\\\\\"|\\\\'|\\\\\\\\|\\\\ |[^\"])*)(?=\")|" |
| + "(?<=')((?:\\\\\"|\\\\'|\\\\\\\\|\\\\ |[^'])*)(?=')|" + "((?:[^\\\\\\s'\",]|\\\\ |\\\\\"|\\\\')+)"); |
| |
| private final Class<?> keyType; |
| |
| private final Class<?> valueType; |
| |
| private static final String NO_VALUE = "No value {1} found for {2}."; |
| private static final String NO_KEY = "No key {1} found for {2}."; |
| |
| /** |
| * Creates a new DateEditor instance |
| * |
| * @param keyType The key type |
| * @param valueType The value type |
| */ |
| public MapEditor(Class<?> keyType, Class<?> valueType) { |
| if (keyType == null) { |
| throw new IllegalArgumentException("keyType"); |
| } |
| |
| if (valueType == null) { |
| throw new IllegalArgumentException("valueType"); |
| } |
| |
| this.keyType = keyType; |
| this.valueType = valueType; |
| getKeyEditor(); |
| getValueEditor(); |
| setTrimText(false); |
| } |
| |
| private PropertyEditor getKeyEditor() { |
| PropertyEditor e = PropertyEditorFactory.getInstance(keyType); |
| |
| if (e == null) { |
| throw new IllegalArgumentException(MessageFormat.format(NO_KEY, PropertyEditor.class.getSimpleName(), |
| keyType.getSimpleName())); |
| } |
| |
| return e; |
| } |
| |
| private PropertyEditor getValueEditor() { |
| PropertyEditor e = PropertyEditorFactory.getInstance(valueType); |
| |
| if (e == null) { |
| throw new IllegalArgumentException(MessageFormat.format(NO_VALUE, PropertyEditor.class.getSimpleName(), |
| valueType.getSimpleName())); |
| } |
| |
| return e; |
| } |
| |
| @Override |
| protected final String toText(Object value) { |
| StringBuilder buf = new StringBuilder(); |
| |
| for (Map.Entry<?,?> entry : ((Map<?,?>) value).entrySet()) { |
| Object ekey = entry.getKey(); |
| Object evalue = entry.getValue(); |
| |
| PropertyEditor ekeyEditor = PropertyEditorFactory.getInstance(ekey); |
| |
| if (ekeyEditor == null) { |
| throw new IllegalArgumentException(MessageFormat.format(NO_KEY, PropertyEditor.class.getSimpleName(), |
| ekey.getClass().getSimpleName())); |
| } |
| |
| ekeyEditor.setValue(ekey); |
| |
| PropertyEditor evalueEditor = PropertyEditorFactory.getInstance(evalue); |
| |
| if (evalueEditor == null) { |
| throw new IllegalArgumentException(MessageFormat.format(NO_VALUE, PropertyEditor.class.getSimpleName(), |
| evalue.getClass().getSimpleName())); |
| } |
| |
| ekeyEditor.setValue(ekey); |
| evalueEditor.setValue(evalue); |
| |
| // TODO normalize. |
| String keyString = ekeyEditor.getAsText(); |
| String valueString = evalueEditor.getAsText(); |
| buf.append(keyString); |
| buf.append(" = "); |
| buf.append(valueString); |
| buf.append(", "); |
| } |
| |
| // Remove the last delimiter. |
| if (buf.length() >= 2) { |
| buf.setLength(buf.length() - 2); |
| } |
| |
| return buf.toString(); |
| } |
| |
| @Override |
| protected final Object toValue(String text) { |
| PropertyEditor keyEditor = getKeyEditor(); |
| PropertyEditor valueEditor = getValueEditor(); |
| Map<Object, Object> answer = newMap(); |
| Matcher m = ELEMENT.matcher(text); |
| TokenType lastTokenType = TokenType.ENTRY_DELIM; |
| Object key = null; |
| Object value; |
| |
| while (m.find()) { |
| if (m.group(1) != null) { |
| if ((lastTokenType != TokenType.VALUE) && (lastTokenType != TokenType.ENTRY_DELIM)) { |
| throw new IllegalArgumentException("Unexpected entry delimiter: " + text); |
| } |
| |
| lastTokenType = TokenType.ENTRY_DELIM; |
| continue; |
| } |
| |
| if (m.group(2) != null) { |
| if (lastTokenType != TokenType.KEY) { |
| throw new IllegalArgumentException("Unexpected key-value delimiter: " + text); |
| } |
| |
| lastTokenType = TokenType.KEY_VALUE_DELIM; |
| continue; |
| } |
| |
| // TODO escape here. |
| String region = m.group(); |
| |
| if (m.group(3) != null || m.group(4) != null) { |
| // Skip the last '"'. |
| m.region(m.end() + 1, m.regionEnd()); |
| } |
| |
| switch (lastTokenType) { |
| case ENTRY_DELIM: |
| keyEditor.setAsText(region); |
| key = keyEditor.getValue(); |
| lastTokenType = TokenType.KEY; |
| break; |
| case KEY_VALUE_DELIM: |
| valueEditor.setAsText(region); |
| value = valueEditor.getValue(); |
| lastTokenType = TokenType.VALUE; |
| answer.put(key, value); |
| break; |
| case KEY: |
| case VALUE: |
| throw new IllegalArgumentException("Unexpected key or value: " + text); |
| } |
| } |
| |
| return answer; |
| } |
| |
| protected Map<Object, Object> newMap() { |
| return new LinkedHashMap<>(); |
| } |
| |
| private enum TokenType { |
| ENTRY_DELIM, KEY_VALUE_DELIM, KEY, VALUE, |
| } |
| } |