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Apache Solr (module: core)
/*
* 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.solr.internal.csv;
import java.io.Serializable;
/**
* CSVStrategy
*
* Represents the strategy for a CSV.
*/
public class CSVStrategy implements Cloneable, Serializable {
private char delimiter;
private char encapsulator;
private char commentStart;
private char escape;
private boolean ignoreLeadingWhitespaces;
private boolean ignoreTrailingWhitespaces;
private boolean interpretUnicodeEscapes;
private boolean ignoreEmptyLines;
// controls for output
private String printerNewline;
// -2 is used to signal disabled, because it won't be confused with
// an EOF signal (-1), and because \ufffe in UTF-16 would be
// encoded as two chars (using surrogates) and thus there should never
// be a collision with a real text char.
public static char COMMENTS_DISABLED = (char)-2;
public static char ESCAPE_DISABLED = (char)-2;
public static char ENCAPSULATOR_DISABLED = (char)-2;
public static String DEFAULT_PRINTER_NEWLINE = "\n";
public static final CSVStrategy DEFAULT_STRATEGY = new ImmutableCSVStrategy
(',', '"', COMMENTS_DISABLED, ESCAPE_DISABLED, true, true, false, true, DEFAULT_PRINTER_NEWLINE);
public static final CSVStrategy EXCEL_STRATEGY = new ImmutableCSVStrategy
(',', '"', COMMENTS_DISABLED, ESCAPE_DISABLED, false, false, false, false, DEFAULT_PRINTER_NEWLINE);
public static final CSVStrategy TDF_STRATEGY = new ImmutableCSVStrategy
('\t', '"', COMMENTS_DISABLED, ESCAPE_DISABLED, true, true, false, true, DEFAULT_PRINTER_NEWLINE);
public CSVStrategy(char delimiter, char encapsulator, char commentStart) {
this(delimiter, encapsulator, commentStart, ESCAPE_DISABLED, true, true, false, true, DEFAULT_PRINTER_NEWLINE);
}
/**
* Customized CSV strategy setter.
*
* @param delimiter a Char used for value separation
* @param encapsulator a Char used as value encapsulation marker
* @param commentStart a Char used for comment identification
* @param escape a Char used for escaping
* @param ignoreTrailingWhitespaces TRUE when trailing whitespaces should be
* ignored
* @param ignoreLeadingWhitespaces TRUE when leading whitespaces should be
* ignored
* @param interpretUnicodeEscapes TRUE when unicode escapes should be
* interpreted
* @param ignoreEmptyLines TRUE when the parser should skip emtpy lines
* @param printerNewline The string to use when printing a newline
*/
public CSVStrategy(char delimiter, char encapsulator, char commentStart, char escape,
boolean ignoreLeadingWhitespaces, boolean ignoreTrailingWhitespaces,
boolean interpretUnicodeEscapes, boolean ignoreEmptyLines,
String printerNewline) {
this.delimiter = delimiter;
this.encapsulator = encapsulator;
this.commentStart = commentStart;
this.escape = escape;
this.ignoreLeadingWhitespaces = ignoreLeadingWhitespaces;
this.ignoreTrailingWhitespaces = ignoreTrailingWhitespaces;
this.interpretUnicodeEscapes = interpretUnicodeEscapes;
this.ignoreEmptyLines = ignoreEmptyLines;
this.printerNewline = printerNewline;
}
/**
* Customized CSV strategy setter.
*
* @param delimiter a Char used for value separation
* @param encapsulator a Char used as value encapsulation marker
* @param commentStart a Char used for comment identification
* @param escape a Char used for escaping
* @param ignoreTrailingWhitespaces TRUE when trailing whitespaces should be
* ignored
* @param ignoreLeadingWhitespaces TRUE when leading whitespaces should be
* ignored
* @param interpretUnicodeEscapes TRUE when unicode escapes should be
* interpreted
* @param ignoreEmptyLines TRUE when the parser should skip emtpy lines
* @deprecated Use the ctor that also takes printerNewline. This ctor will be removed in Solr 7.
*/
@Deprecated
public CSVStrategy(char delimiter, char encapsulator, char commentStart, char escape,
boolean ignoreLeadingWhitespaces, boolean ignoreTrailingWhitespaces,
boolean interpretUnicodeEscapes, boolean ignoreEmptyLines) {
this(delimiter, encapsulator, commentStart, escape,
ignoreLeadingWhitespaces, ignoreTrailingWhitespaces,
interpretUnicodeEscapes, ignoreEmptyLines,
DEFAULT_PRINTER_NEWLINE);
}
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setDelimiter(char delimiter) { this.delimiter = delimiter; }
public char getDelimiter() { return this.delimiter; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setEncapsulator(char encapsulator) { this.encapsulator = encapsulator; }
public char getEncapsulator() { return this.encapsulator; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setCommentStart(char commentStart) { this.commentStart = commentStart; }
public char getCommentStart() { return this.commentStart; }
public boolean isCommentingDisabled() { return this.commentStart == COMMENTS_DISABLED; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setEscape(char escape) { this.escape = escape; }
public char getEscape() { return this.escape; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setIgnoreLeadingWhitespaces(boolean ignoreLeadingWhitespaces) {
this.ignoreLeadingWhitespaces = ignoreLeadingWhitespaces;
}
public boolean getIgnoreLeadingWhitespaces() { return this.ignoreLeadingWhitespaces; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setIgnoreTrailingWhitespaces(boolean ignoreTrailingWhitespaces) {
this.ignoreTrailingWhitespaces = ignoreTrailingWhitespaces;
}
public boolean getIgnoreTrailingWhitespaces() { return this.ignoreTrailingWhitespaces; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setUnicodeEscapeInterpretation(boolean interpretUnicodeEscapes) {
this.interpretUnicodeEscapes = interpretUnicodeEscapes;
}
public boolean getUnicodeEscapeInterpretation() { return this.interpretUnicodeEscapes; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setIgnoreEmptyLines(boolean ignoreEmptyLines) { this.ignoreEmptyLines = ignoreEmptyLines; }
public boolean getIgnoreEmptyLines() { return this.ignoreEmptyLines; }
/** @deprecated will be removed in Solr 7 */
@Deprecated
public void setPrinterNewline(String newline) {
this.printerNewline = newline;
}
public String getPrinterNewline() {
return this.printerNewline;
}
/** @deprecated will be removed in Solr 7 */
@Deprecated
@Override
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
throw new RuntimeException(e); // impossible
}
}
}
/**
* @deprecated will be removed in Solr 7
* @lucene.internal
*/
@Deprecated
class ImmutableCSVStrategy extends CSVStrategy {
ImmutableCSVStrategy(char delimiter, char encapsulator, char commentStart, char escape,
boolean ignoreLeadingWhitespaces, boolean ignoreTrailingWhitespaces,
boolean interpretUnicodeEscapes, boolean ignoreEmptyLines,
String printerNewline) {
super(delimiter, encapsulator, commentStart, escape,
ignoreLeadingWhitespaces, ignoreTrailingWhitespaces,
interpretUnicodeEscapes, ignoreEmptyLines,
printerNewline);
}
@Override
public void setDelimiter(char delimiter) {
throw new UnsupportedOperationException();
}
@Override
public void setEncapsulator(char encapsulator) {
throw new UnsupportedOperationException();
}
@Override
public void setCommentStart(char commentStart) {
throw new UnsupportedOperationException();
}
@Override
public void setEscape(char escape) {
throw new UnsupportedOperationException();
}
@Override
public void setIgnoreLeadingWhitespaces(boolean ignoreLeadingWhitespaces) {
throw new UnsupportedOperationException();
}
@Override
public void setIgnoreTrailingWhitespaces(boolean ignoreTrailingWhitespaces) {
throw new UnsupportedOperationException();
}
@Override
public void setUnicodeEscapeInterpretation(boolean interpretUnicodeEscapes) {
throw new UnsupportedOperationException();
}
@Override
public void setIgnoreEmptyLines(boolean ignoreEmptyLines) {
throw new UnsupportedOperationException();
}
@Override
public void setPrinterNewline(String newline) {
throw new UnsupportedOperationException();
}
/** Returns a mutable clone */
@Override
public Object clone() {
return new CSVStrategy(getDelimiter(), getEncapsulator(), getCommentStart(), getEscape(),
getIgnoreLeadingWhitespaces(), getIgnoreTrailingWhitespaces(),
getUnicodeEscapeInterpretation(), getIgnoreEmptyLines(),
getPrinterNewline());
}
}