author | František Kučera <franta-hg@frantovo.cz> |
Tue, 30 Apr 2019 19:49:17 +0200 | |
branch | v_0 |
changeset 248 | 7f81cfa150d0 |
parent 246 | 277c18b48762 |
child 250 | aae5009bd0af |
permissions | -rw-r--r-- |
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/** |
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* SQL-DK |
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* Copyright © 2013 František Kučera (frantovo.cz) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package info.globalcode.sql.dk.formatting; |
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import info.globalcode.sql.dk.Parameter; |
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import info.globalcode.sql.dk.Xmlns; |
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import info.globalcode.sql.dk.configuration.DatabaseDefinition; |
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import static info.globalcode.sql.dk.Functions.notNull; |
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import info.globalcode.sql.dk.NamedParameter; |
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import info.globalcode.sql.dk.configuration.PropertyDeclaration; |
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import java.sql.Array; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import java.sql.SQLXML; |
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import java.sql.Types; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.LinkedHashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import javax.xml.namespace.QName; |
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/** |
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* <p> |
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* Prints machine-readable output – XML document containing resultsets and updates count. Good |
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* choice for further processing – e.g. XSL transformation.</p> |
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* |
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* <p> |
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* XML format is defined in the <a href="https://relational-pipes.globalcode.info/">Relational |
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* pipes</a> specification. |
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* </p> |
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* |
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* @author Ing. František Kučera (frantovo.cz) |
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*/ |
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@PropertyDeclaration(name = XmlFormatter.PROPERTY_LABELED_COLUMNS, defaultValue = "false", type = Boolean.class, description = "whether to add 'label' attribute to each 'column' element") |
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public class XmlFormatter extends AbstractXmlFormatter { |
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private static final String XML_ELEMENT_RELATION = "relation"; |
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private static final String XML_ELEMENT_NAME = "name"; |
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private static final String XML_ELEMENT_RECORD = "record"; |
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private static final String XML_ELEMENT_ATTRIBUTE = "attribute"; |
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private static final String XML_ATTRIBUTE_NAME = "name"; |
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private static final String XML_ATTRIBUTE_TYPE = "type"; |
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private static final String XML_ATTRIBUTE_STATEMENT = "statement"; |
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private static final String XML_NS_PREFIX_SQLDK = "sql-dk"; |
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private static final String RELPIPE_TYPE_BOOLEAN = "boolean"; |
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private static final String RELPIPE_TYPE_INTEGER = "integer"; |
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private static final String RELPIPE_TYPE_STRING = "string"; |
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private static final Map<Integer, String> RELPIPE_TYPES; |
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static { |
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Map<Integer, String> m = new HashMap<>(); |
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m.put(Types.BOOLEAN, RELPIPE_TYPE_BOOLEAN); |
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m.put(Types.BIT, RELPIPE_TYPE_BOOLEAN); // TODO: relpipe "boolean" can not be null in the current version |
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// m.put(Types.INTEGER, RELPIPE_TYPE_INTEGER); // relpipe "integer" is unsigned |
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// TODO: add more types when supported in Relational pipes |
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m.put(Types.CHAR, RELPIPE_TYPE_STRING); |
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m.put(Types.VARCHAR, RELPIPE_TYPE_STRING); |
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RELPIPE_TYPES = Collections.unmodifiableMap(m); |
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} |
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public static final String NAME = "xml"; // bash-completion:formatter |
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public static final String PROPERTY_LABELED_COLUMNS = "labeledColumns"; |
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private static final Logger log = Logger.getLogger(XmlFormatter.class.getName()); |
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private final boolean labeledColumns; |
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private String currentDatabaseName; |
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private int statementCounter; |
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public XmlFormatter(FormatterContext formatterContext) { |
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super(formatterContext); |
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labeledColumns = formatterContext.getProperties().getBoolean(PROPERTY_LABELED_COLUMNS, false); |
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} |
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private QName qname(String localPart) { |
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return new QName(Xmlns.RELPIPE, localPart); |
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} |
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private QName qnameDK(String localPart) { |
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return new QName(Xmlns.SQLDK, localPart, XML_NS_PREFIX_SQLDK); |
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} |
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@Override |
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public void writeStartBatch() { |
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super.writeStartBatch(); |
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printStartDocument(); |
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Map<QName, String> attributes = new LinkedHashMap<>(2); |
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attributes.put(qname("xmlns"), Xmlns.RELPIPE); |
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|
109 |
attributes.put(new QName(null, XML_NS_PREFIX_SQLDK, "xmlns"), Xmlns.SQLDK); |
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|
110 |
printStartElement(qname("relpipe"), attributes); |
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|
111 |
statementCounter = 0; |
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|
112 |
|
128
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113 |
} |
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114 |
|
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115 |
@Override |
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116 |
public void writeEndBatch() { |
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117 |
super.writeEndBatch(); |
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118 |
printEndElement(); |
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|
119 |
printEndDocument(); |
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120 |
} |
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121 |
|
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122 |
@Override |
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|
123 |
public void writeStartDatabase(DatabaseDefinition databaseDefinition) { |
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124 |
super.writeStartDatabase(databaseDefinition); |
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125 |
currentDatabaseName = databaseDefinition.getName(); |
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126 |
Map<QName, String> attributes = databaseDefinition.getName() == null ? null : singleAttribute(qname("name"), databaseDefinition.getName()); |
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127 |
printEmptyElement(qnameDK("database-start"), attributes); |
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128 |
} |
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129 |
|
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130 |
@Override |
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131 |
public void writeEndDatabase() { |
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132 |
super.writeEndDatabase(); |
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133 |
Map<QName, String> attributes = currentDatabaseName == null ? null : singleAttribute(qname("name"), currentDatabaseName); |
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|
134 |
printEmptyElement(qnameDK("database-end"), attributes); |
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|
135 |
} |
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|
136 |
|
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|
137 |
private String getCurrentStatementName() { |
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|
138 |
return "s" + statementCounter; |
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|
139 |
} |
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|
140 |
|
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|
141 |
@Override |
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142 |
public void writeStartStatement() { |
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143 |
super.writeStartStatement(); |
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|
144 |
statementCounter++; |
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|
145 |
printEmptyElement(qnameDK("statement-start"), singleAttribute(qname("id"), getCurrentStatementName())); |
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146 |
} |
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|
147 |
|
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|
148 |
@Override |
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|
149 |
public void writeEndStatement() { |
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|
150 |
super.writeEndStatement(); |
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|
151 |
printEmptyElement(qnameDK("statement-end"), singleAttribute(qname("id"), getCurrentStatementName())); |
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|
152 |
} |
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|
153 |
|
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|
154 |
@Override |
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|
155 |
public void writeQuery(String sql) { |
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|
156 |
super.writeQuery(sql); |
245
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|
157 |
printTextElement(qnameDK("sql"), singleAttribute(qname(XML_ATTRIBUTE_STATEMENT), getCurrentStatementName()), sql); |
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|
158 |
} |
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|
159 |
|
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|
160 |
@Override |
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|
161 |
public void writeParameters(List<? extends Parameter> parameters) { |
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|
162 |
super.writeParameters(parameters); |
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|
163 |
|
245
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|
164 |
if (parameters != null && parameters.size() > 0) { |
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|
165 |
|
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|
166 |
printStartElement(qnameDK("parameters"), singleAttribute(qname(XML_ATTRIBUTE_STATEMENT), getCurrentStatementName())); |
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changeset
|
167 |
|
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|
168 |
for (Parameter p : notNull(parameters)) { |
128
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|
169 |
|
245
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|
170 |
Map<QName, String> attributes = new LinkedHashMap<>(2); |
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|
171 |
if (p instanceof NamedParameter) { |
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|
172 |
attributes.put(qname(XML_ATTRIBUTE_NAME), ((NamedParameter) p).getName()); |
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|
173 |
} |
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|
174 |
attributes.put(qname(XML_ATTRIBUTE_TYPE), p.getType().name()); |
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changeset
|
175 |
|
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|
176 |
printTextElement(qnameDK("parameter"), attributes, String.valueOf(p.getValue())); |
128
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|
177 |
} |
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changeset
|
178 |
|
245
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|
179 |
printEndElement(); |
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changeset
|
180 |
|
128
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|
181 |
} |
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changeset
|
182 |
|
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changeset
|
183 |
} |
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changeset
|
184 |
|
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changeset
|
185 |
@Override |
142
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Formatters: structural change – new level „statement“ → query and parameters are no more duplicated into each result set or updates result
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|
186 |
public void writeStartResultSet(ColumnsHeader header) { |
da1e38386d84
Formatters: structural change – new level „statement“ → query and parameters are no more duplicated into each result set or updates result
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|
187 |
super.writeStartResultSet(header); |
245
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238
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changeset
|
188 |
printStartElement(qname(XML_ELEMENT_RELATION), singleAttribute(qnameDK(XML_ATTRIBUTE_STATEMENT), getCurrentStatementName())); |
b6ff5b7a8422
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František Kučera <franta-hg@frantovo.cz>
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changeset
|
189 |
printTextElement(qname(XML_ELEMENT_NAME), null, getCurrentRelationName()); |
128
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changeset
|
190 |
|
245
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|
191 |
printStartElement(qname("attributes-metadata")); |
128
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|
192 |
for (ColumnDescriptor cd : header.getColumnDescriptors()) { |
245
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changeset
|
193 |
Map<QName, String> attributes = new LinkedHashMap<>(6); |
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changeset
|
194 |
|
b6ff5b7a8422
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|
195 |
attributes.put(qname(XML_ATTRIBUTE_NAME), cd.getLabel()); |
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|
196 |
attributes.put(qname(XML_ATTRIBUTE_TYPE), toRelpipeType(cd.getType())); |
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changeset
|
197 |
|
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|
198 |
attributes.put(qnameDK("tableName"), cd.getTableName()); |
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|
199 |
attributes.put(qnameDK("columnName"), cd.getName()); |
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|
200 |
attributes.put(qnameDK("jdbcTypeName"), cd.getTypeName()); |
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|
201 |
attributes.put(qnameDK("jdbcType"), String.valueOf(cd.getType())); |
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|
202 |
|
b6ff5b7a8422
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|
203 |
printEmptyElement(qname("attribute-metadata"), attributes); |
128
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|
204 |
} |
245
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|
205 |
printEndElement(); |
b6ff5b7a8422
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changeset
|
206 |
} |
b6ff5b7a8422
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changeset
|
207 |
|
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|
208 |
/** |
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|
209 |
* @param jdbcType value from {@linkplain Types} |
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|
210 |
* @return |
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|
211 |
*/ |
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|
212 |
private String toRelpipeType(int jdbcType) { |
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|
213 |
return RELPIPE_TYPES.getOrDefault(jdbcType, RELPIPE_TYPE_STRING); |
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214 |
} |
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@Override |
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public void writeEndResultSet() { |
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super.writeEndResultSet(); |
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printEndElement(); |
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} |
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@Override |
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public void writeStartRow() { |
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super.writeStartRow(); |
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printStartElement(qname(XML_ELEMENT_RECORD)); |
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} |
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@Override |
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public void writeColumnValue(Object value) { |
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super.writeColumnValue(value); |
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Map<QName, String> attributes = null; |
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if (labeledColumns) { |
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attributes = new LinkedHashMap<>(2); |
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attributes.put(qname(XML_ATTRIBUTE_NAME), getCurrentColumnsHeader().getColumnDescriptors().get(getCurrentColumnsCount() - 1).getLabel()); |
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attributes.put(qname(XML_ATTRIBUTE_TYPE), toRelpipeType(getCurrentColumnsHeader().getColumnDescriptors().get(getCurrentColumnsCount() - 1).getType())); |
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} |
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if (value == null) { |
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if (attributes == null) { |
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attributes = new LinkedHashMap<>(2); |
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} |
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// TODO: synchronize syntax with Relational pipes (after adding support of null values) |
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attributes.put(qnameDK("null"), "true"); |
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printEmptyElement(qname(XML_ELEMENT_ATTRIBUTE), attributes); |
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} else if (value instanceof Array) { |
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Array sqlArray = (Array) value; |
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try { |
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Object[] array = (Object[]) sqlArray.getArray(); |
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printStartElement(qname(XML_ELEMENT_ATTRIBUTE), attributes); |
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printArray(array); |
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printEndElement(); |
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} catch (SQLException e) { |
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// FIXME: rewrite array formatting, remember array mode, don't try sqlArray.getArray() again and again if it has failed |
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log.log(Level.SEVERE, "Unable to format array", e); |
233 | 257 |
try { |
258 |
ResultSet arrayResultSet = sqlArray.getResultSet(); |
|
259 |
//int columnCount = arrayResultSet.getMetaData().getColumnCount(); |
|
260 |
ArrayList<Object> arrayList = new ArrayList<>(); |
|
261 |
while (arrayResultSet.next()) { |
|
262 |
arrayList.add(arrayResultSet.getObject(2)); |
|
263 |
// for (int i = 1; i <= columnCount; i++) { |
|
264 |
// log.log(Level.INFO, "Array column {0} = {1}", new Object[]{i, arrayResultSet.getObject(i)}); |
|
265 |
// } |
|
266 |
} |
|
267 |
||
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printStartElement(qname(XML_ELEMENT_ATTRIBUTE), attributes); |
233 | 269 |
// FIXME: instanceof SQLXML, see below |
270 |
printArray(arrayList.toArray()); |
|
271 |
printEndElement(); |
|
272 |
||
273 |
} catch (SQLException e2) { |
|
274 |
// FIXME: fix logging, error recovery |
|
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log.log(Level.SEVERE, "Second level fuck up !!!", e2); |
|
276 |
} |
|
277 |
||
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writeColumnValue(String.valueOf(value)); |
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} |
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|
233 | 281 |
} else if (value instanceof SQLXML) { // FIXME: move to separate method, to AbstractFormatter? |
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SQLXML xml = (SQLXML) value; |
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// TODO: parse DOM/SAX and transplant XML, don't escape (optional) |
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284 |
try { |
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printTextElement(qname(XML_ELEMENT_ATTRIBUTE), attributes, xml.getString()); |
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} catch (SQLException e) { |
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log.log(Level.SEVERE, "Unable to format XML", e); |
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writeColumnValue(String.valueOf(value)); |
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} |
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} else { |
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291 |
printTextElement(qname(XML_ELEMENT_ATTRIBUTE), attributes, toString(value)); |
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} |
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} |
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294 |
|
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private void printArray(Object[] array) { |
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// TODO: synchronize array syntax with Relational pipes |
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297 |
printStartElement(qnameDK("array")); |
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for (Object o : array) { |
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if (o instanceof Object[]) { |
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printStartElement(qnameDK("item")); |
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printArray((Object[]) o); |
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302 |
printEndElement(); |
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|
303 |
} else { |
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|
304 |
printTextElement(qnameDK("item"), null, String.valueOf(o)); |
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|
305 |
} |
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|
306 |
} |
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|
307 |
printEndElement(); |
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|
308 |
} |
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309 |
|
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310 |
@Override |
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311 |
public void writeEndRow() { |
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312 |
super.writeEndRow(); |
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313 |
printEndElement(); |
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|
314 |
} |
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|
315 |
|
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|
316 |
@Override |
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|
317 |
public void writeUpdatesResult(int updatedRowsCount) { |
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|
318 |
super.writeUpdatesResult(updatedRowsCount); |
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|
319 |
printTextElement(qnameDK("updatedRecords"), singleAttribute(qnameDK(XML_ATTRIBUTE_STATEMENT), getCurrentStatementName()), String.valueOf(updatedRowsCount)); |
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320 |
} |
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|
321 |
|
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322 |
protected String toString(Object value) { |
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323 |
return String.valueOf(value); |
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|
324 |
} |
29
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|
325 |
} |