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AbstractQueryLogEntryCreator.java
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AbstractQueryLogEntryCreator.java
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package net.ttddyy.dsproxy.listener.logging;
import net.ttddyy.dsproxy.StatementType;
import net.ttddyy.dsproxy.proxy.ParameterSetOperation;
import java.sql.Connection;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
/**
* @author Tadaya Tsuyukubo
* @since 1.4
*/
public abstract class AbstractQueryLogEntryCreator implements QueryLogEntryCreator {
protected static final Map<Character, String> JSON_SPECIAL_CHARS = new HashMap<Character, String>();
static {
JSON_SPECIAL_CHARS.put('"', "\\\""); // quotation mark
JSON_SPECIAL_CHARS.put('\\', "\\\\"); // reverse solidus
JSON_SPECIAL_CHARS.put('/', "\\/"); // solidus
JSON_SPECIAL_CHARS.put('\b', "\\b"); // backspace
JSON_SPECIAL_CHARS.put('\f', "\\f"); // formfeed
JSON_SPECIAL_CHARS.put('\n', "\\n"); // newline
JSON_SPECIAL_CHARS.put('\r', "\\r"); // carriage return
JSON_SPECIAL_CHARS.put('\t', "\\t"); // horizontal tab
}
protected ParameterValueConverter setNullParameterValueConverter = new SetNullParameterValueConverter();
protected ParameterValueConverter registerOutParameterValueConverter = new RegisterOutParameterValueConverter();
/**
* Comparator considering string as integer.
*
* When it has null, put it as first element(smaller).
* If string cannot be parsed to integer, it compared as string.
*/
protected static class StringAsIntegerComparator implements Comparator<String> {
@Override
public int compare(String left, String right) {
// make null first
if (left == null && right == null) {
return 0;
}
if (left == null) {
return -1; // right is greater
}
if (right == null) {
return 1; // left is greater;
}
try {
int leftInt = Integer.parseInt(left);
int rightInt = Integer.parseInt(right);
return (leftInt < rightInt) ? -1 : ((leftInt == rightInt) ? 0 : 1);
} catch (NumberFormatException e) {
return left.compareTo(right); // use String comparison
}
}
}
protected void chompIfEndWith(StringBuilder sb, char c) {
final int lastCharIndex = sb.length() - 1;
if (lastCharIndex >= 0 && sb.charAt(lastCharIndex) == c) {
sb.deleteCharAt(lastCharIndex);
}
}
protected String getTransactionIsolation(int isolationLevel) {
switch (isolationLevel) {
case Connection.TRANSACTION_NONE:
return "NONE";
case Connection.TRANSACTION_READ_UNCOMMITTED:
return "READ_UNCOMMITTED";
case Connection.TRANSACTION_READ_COMMITTED:
return "READ_COMMITTED";
case Connection.TRANSACTION_REPEATABLE_READ:
return "REPEATABLE_READ";
case Connection.TRANSACTION_SERIALIZABLE:
return "SERIALIZABLE";
}
return "";
}
protected String getStatementType(StatementType statementType) {
if (StatementType.STATEMENT.equals(statementType)) {
return "Statement";
} else if (StatementType.PREPARED.equals(statementType)) {
return "Prepared";
} else if (StatementType.CALLABLE.equals(statementType)) {
return "Callable";
}
return "Unknown";
}
/**
* populate param map with sorted by key.
*
* @param params list of ParameterSetOperation
* @return a map: key=index/name as string, value=first value
* @since 1.4
*/
protected SortedMap<String, String> getParametersToDisplay(List<ParameterSetOperation> params) {
// populate param map with sorted by key: key=index/name, value=first value
SortedMap<String, String> paramMap = new TreeMap<String, String>(new StringAsIntegerComparator());
for (ParameterSetOperation param : params) {
String key = getParameterKeyToDisplay(param);
String value = getParameterValueToDisplay(param);
paramMap.put(key, value);
}
return paramMap;
}
/**
* @param param parameter set operation
* @return parameterIndex or parameterName as String
* @since 1.4
*/
public String getParameterKeyToDisplay(ParameterSetOperation param) {
Object key = param.getArgs()[0]; // either int(parameterIndex) or string(parameterName)
return key instanceof String ? (String) key : key.toString();
}
protected String getParameterValueToDisplay(ParameterSetOperation param) {
String value;
if (ParameterSetOperation.isSetNullParameterOperation(param)) {
// for setNull
value = getDisplayValueForSetNull(param);
} else if (ParameterSetOperation.isRegisterOutParameterOperation(param)) {
// for registerOutParameter
value = getDisplayValueForRegisterOutParameter(param);
} else {
value = getDisplayValue(param);
}
return value;
}
/**
* @param param parameter set operation
* @return value to display
* @since 1.4
*/
public String getDisplayValueForSetNull(ParameterSetOperation param) {
return this.setNullParameterValueConverter.getValue(param);
}
/**
* @param param parameter set operation
* @return value to display
* @since 1.4
*/
public String getDisplayValueForRegisterOutParameter(ParameterSetOperation param) {
return this.registerOutParameterValueConverter.getValue(param);
}
/**
* @param param parameter set operation
* @return value to display
* @since 1.4
*/
public String getDisplayValue(ParameterSetOperation param) {
Object value = param.getArgs()[1];
return value == null ? null : value.toString();
}
/**
* @param setNullParameterValueConverter parameter value converter
* @since 1.4
*/
public void setSetNullParameterValueConverter(ParameterValueConverter setNullParameterValueConverter) {
this.setNullParameterValueConverter = setNullParameterValueConverter;
}
/**
* @param registerOutParameterValueConverter parameter value converter
* @since 1.4
*/
public void setRegisterOutParameterValueConverter(ParameterValueConverter registerOutParameterValueConverter) {
this.registerOutParameterValueConverter = registerOutParameterValueConverter;
}
}