Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /**
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| 2 | * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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| 3 | * you may not use this file except in compliance with the License.
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| 4 | * You may obtain a copy of the License at
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| 5 | *
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| 6 | * http://www.apache.org/licenses/LICENSE-2.0
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| 7 | *
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| 8 | * Unless required by applicable law or agreed to in writing, software
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| 9 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 10 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 11 | * See the License for the specific language governing permissions and
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| 12 | * limitations under the License.
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| 13 | */
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| 14 | package org.jivesoftware.smackx.pubsub;
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| 15 |
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| 16 | import java.text.ParseException;
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| 17 | import java.text.SimpleDateFormat;
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| 18 | import java.util.ArrayList;
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| 19 | import java.util.Collection;
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| 20 | import java.util.Date;
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| 21 | import java.util.Iterator;
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| 22 | import java.util.UnknownFormatConversionException;
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| 23 |
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| 24 | import org.jivesoftware.smack.util.StringUtils;
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| 25 | import org.jivesoftware.smackx.Form;
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| 26 | import org.jivesoftware.smackx.FormField;
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| 27 | import org.jivesoftware.smackx.packet.DataForm;
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| 28 |
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| 29 | /**
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| 30 | * A decorator for a {@link Form} to easily enable reading and updating
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| 31 | * of subscription options. All operations read or update the underlying {@link DataForm}.
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| 32 | *
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| 33 | * <p>Unlike the {@link Form}.setAnswer(XXX)} methods, which throw an exception if the field does not
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| 34 | * exist, all <b>SubscribeForm.setXXX</b> methods will create the field in the wrapped form
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| 35 | * if it does not already exist.
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| 36 | *
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| 37 | * @author Robin Collier
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| 38 | */
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| 39 | public class SubscribeForm extends Form
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| 40 | {
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| 41 | public SubscribeForm(DataForm configDataForm)
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| 42 | {
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| 43 | super(configDataForm);
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| 44 | }
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| 45 |
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| 46 | public SubscribeForm(Form subscribeOptionsForm)
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| 47 | {
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| 48 | super(subscribeOptionsForm.getDataFormToSend());
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| 49 | }
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| 50 |
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| 51 | public SubscribeForm(FormType formType)
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| 52 | {
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| 53 | super(formType.toString());
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| 54 | }
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| 55 |
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| 56 | /**
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| 57 | * Determines if an entity wants to receive notifications.
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| 58 | *
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| 59 | * @return true if want to receive, false otherwise
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| 60 | */
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| 61 | public boolean isDeliverOn()
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| 62 | {
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| 63 | return parseBoolean(getFieldValue(SubscribeOptionFields.deliver));
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| 64 | }
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| 65 |
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| 66 | /**
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| 67 | * Sets whether an entity wants to receive notifications.
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| 68 | *
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| 69 | * @param deliverNotifications
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| 70 | */
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| 71 | public void setDeliverOn(boolean deliverNotifications)
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| 72 | {
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| 73 | addField(SubscribeOptionFields.deliver, FormField.TYPE_BOOLEAN);
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| 74 | setAnswer(SubscribeOptionFields.deliver.getFieldName(), deliverNotifications);
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| 75 | }
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| 76 |
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| 77 | /**
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| 78 | * Determines if notifications should be delivered as aggregations or not.
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| 79 | *
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| 80 | * @return true to aggregate, false otherwise
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| 81 | */
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| 82 | public boolean isDigestOn()
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| 83 | {
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| 84 | return parseBoolean(getFieldValue(SubscribeOptionFields.digest));
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| 85 | }
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| 86 |
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| 87 | /**
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| 88 | * Sets whether notifications should be delivered as aggregations or not.
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| 89 | *
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| 90 | * @param digestOn true to aggregate, false otherwise
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| 91 | */
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| 92 | public void setDigestOn(boolean digestOn)
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| 93 | {
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| 94 | addField(SubscribeOptionFields.deliver, FormField.TYPE_BOOLEAN);
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| 95 | setAnswer(SubscribeOptionFields.deliver.getFieldName(), digestOn);
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| 96 | }
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| 97 |
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| 98 | /**
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| 99 | * Gets the minimum number of milliseconds between sending notification digests
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| 100 | *
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| 101 | * @return The frequency in milliseconds
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| 102 | */
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| 103 | public int getDigestFrequency()
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| 104 | {
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| 105 | return Integer.parseInt(getFieldValue(SubscribeOptionFields.digest_frequency));
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | * Sets the minimum number of milliseconds between sending notification digests
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| 110 | *
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| 111 | * @param frequency The frequency in milliseconds
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| 112 | */
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| 113 | public void setDigestFrequency(int frequency)
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| 114 | {
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| 115 | addField(SubscribeOptionFields.digest_frequency, FormField.TYPE_TEXT_SINGLE);
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| 116 | setAnswer(SubscribeOptionFields.digest_frequency.getFieldName(), frequency);
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| 117 | }
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| 118 |
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| 119 | /**
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| 120 | * Get the time at which the leased subscription will expire, or has expired.
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| 121 | *
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| 122 | * @return The expiry date
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| 123 | */
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| 124 | public Date getExpiry()
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| 125 | {
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| 126 | String dateTime = getFieldValue(SubscribeOptionFields.expire);
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| 127 | try
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| 128 | {
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| 129 | return StringUtils.parseDate(dateTime);
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| 130 | }
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| 131 | catch (ParseException e)
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| 132 | {
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| 133 | UnknownFormatConversionException exc = new UnknownFormatConversionException(dateTime);
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| 134 | exc.initCause(e);
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| 135 | throw exc;
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| 136 | }
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| 137 | }
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| 138 |
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| 139 | /**
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| 140 | * Sets the time at which the leased subscription will expire, or has expired.
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| 141 | *
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| 142 | * @param expire The expiry date
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| 143 | */
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| 144 | public void setExpiry(Date expire)
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| 145 | {
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| 146 | addField(SubscribeOptionFields.expire, FormField.TYPE_TEXT_SINGLE);
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| 147 | setAnswer(SubscribeOptionFields.expire.getFieldName(), StringUtils.formatXEP0082Date(expire));
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| 148 | }
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| 149 |
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| 150 | /**
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| 151 | * Determines whether the entity wants to receive an XMPP message body in
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| 152 | * addition to the payload format.
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| 153 | *
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| 154 | * @return true to receive the message body, false otherwise
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| 155 | */
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| 156 | public boolean isIncludeBody()
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| 157 | {
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| 158 | return parseBoolean(getFieldValue(SubscribeOptionFields.include_body));
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| 159 | }
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| 160 |
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| 161 | /**
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| 162 | * Sets whether the entity wants to receive an XMPP message body in
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| 163 | * addition to the payload format.
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| 164 | *
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| 165 | * @param include true to receive the message body, false otherwise
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| 166 | */
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| 167 | public void setIncludeBody(boolean include)
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| 168 | {
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| 169 | addField(SubscribeOptionFields.include_body, FormField.TYPE_BOOLEAN);
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| 170 | setAnswer(SubscribeOptionFields.include_body.getFieldName(), include);
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| 171 | }
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| 172 |
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| 173 | /**
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| 174 | * Gets the {@link PresenceState} for which an entity wants to receive
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| 175 | * notifications.
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| 176 | *
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| 177 | * @return iterator over the list of states
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| 178 | */
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| 179 | public Iterator<PresenceState> getShowValues()
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| 180 | {
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| 181 | ArrayList<PresenceState> result = new ArrayList<PresenceState>(5);
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| 182 | Iterator<String > it = getFieldValues(SubscribeOptionFields.show_values);
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| 183 |
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| 184 | while (it.hasNext())
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| 185 | {
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| 186 | String state = it.next();
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| 187 | result.add(PresenceState.valueOf(state));
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| 188 | }
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| 189 | return result.iterator();
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| 190 | }
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| 191 |
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| 192 | /**
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| 193 | * Sets the list of {@link PresenceState} for which an entity wants
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| 194 | * to receive notifications.
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| 195 | *
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| 196 | * @param stateValues The list of states
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| 197 | */
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| 198 | public void setShowValues(Collection<PresenceState> stateValues)
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| 199 | {
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| 200 | ArrayList<String> values = new ArrayList<String>(stateValues.size());
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| 201 |
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| 202 | for (PresenceState state : stateValues)
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| 203 | {
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| 204 | values.add(state.toString());
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| 205 | }
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| 206 | addField(SubscribeOptionFields.show_values, FormField.TYPE_LIST_MULTI);
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| 207 | setAnswer(SubscribeOptionFields.show_values.getFieldName(), values);
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| 208 | }
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| 209 |
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| 210 |
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| 211 | static private boolean parseBoolean(String fieldValue)
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| 212 | {
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| 213 | return ("1".equals(fieldValue) || "true".equals(fieldValue));
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| 214 | }
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| 215 |
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| 216 | private String getFieldValue(SubscribeOptionFields field)
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| 217 | {
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| 218 | FormField formField = getField(field.getFieldName());
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| 219 |
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| 220 | return formField.getValues().next();
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| 221 | }
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| 222 |
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| 223 | private Iterator<String> getFieldValues(SubscribeOptionFields field)
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| 224 | {
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| 225 | FormField formField = getField(field.getFieldName());
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| 226 |
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| 227 | return formField.getValues();
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| 228 | }
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| 229 |
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| 230 | private void addField(SubscribeOptionFields nodeField, String type)
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| 231 | {
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| 232 | String fieldName = nodeField.getFieldName();
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| 233 |
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| 234 | if (getField(fieldName) == null)
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| 235 | {
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| 236 | FormField field = new FormField(fieldName);
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| 237 | field.setType(type);
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| 238 | addField(field);
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| 239 | }
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| 240 | }
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| 241 | }
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