org.sfm.csv.CsvMapperFactory Maven / Gradle / Ivy
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package org.sfm.csv;
import org.sfm.csv.impl.CellValueReaderFactoryImpl;
import org.sfm.csv.impl.CsvColumnDefinitionProviderImpl;
import org.sfm.csv.impl.DynamicCsvMapper;
import org.sfm.map.*;
import org.sfm.map.impl.*;
import org.sfm.reflect.ReflectionService;
import org.sfm.reflect.TypeReference;
import org.sfm.reflect.meta.ClassMeta;
import org.sfm.reflect.meta.PropertyNameMatcherFactory;
import org.sfm.utils.Predicate;
import java.lang.reflect.Type;
/**
* CsvMapperFactory is not Thread-Safe but the mappers are.
* It is strongly advised to instantiate one mapper per class for the life of your application.
*
* You can instantiate dynamic mapper which will use the first line of the csv file
* to figure out the list of the columns or a static one using a builder.
*
*
* // create a dynamic mapper targeting MyClass
* CsvMapperFactory
* .newInstance()
* .newMapper(MyClass.class);
*
* // create a static mapper targeting MyClass
* CsvMapperFactory
* .newInstance()
* .newBuilder(MyClass.class)
* .addMapping("id")
* .addMapping("field1")
* .addMapping("field2")
* .mapper();
*
*
*/
public final class CsvMapperFactory {
/**
* instantiate a new JdbcMapperFactory
* @return a new JdbcMapperFactory
*/
public static CsvMapperFactory newInstance() {
return new CsvMapperFactory();
}
private FieldMapperErrorHandler fieldMapperErrorHandler = new RethrowFieldMapperErrorHandler();
private MapperBuilderErrorHandler mapperBuilderErrorHandler = new RethrowMapperBuilderErrorHandler();
private RowHandlerErrorHandler rowHandlerErrorHandler = new RethrowRowHandlerErrorHandler();
private CsvColumnDefinitionProviderImpl columnDefinitions = new CsvColumnDefinitionProviderImpl();
private boolean useAsm = true;
private boolean disableAsm = false;
private boolean failOnAsm = false;
private int asmMapperNbFieldsLimit = CsvMapperBuilder.NO_ASM_CSV_HANDLER_THRESHOLD;
private int maxMethodSize = CsvMapperBuilder.CSV_MAX_METHOD_SIZE;
private PropertyNameMatcherFactory propertyNameMatcherFactory = new DefaultPropertyNameMatcherFactory();
private String defaultDateFormat = "yyyy-MM-dd HH:mm:ss";
private CellValueReaderFactory cellValueReaderFactory = new CellValueReaderFactoryImpl();
public CsvMapperFactory() {
}
/**
* Set a new FieldMapperErrorHandler. Use to handle thrown during the mapping of a field.
* @param fieldMapperErrorHandler the FieldMapperErrorHandler
* @return the current factory
*/
public CsvMapperFactory fieldMapperErrorHandler(final FieldMapperErrorHandler fieldMapperErrorHandler) {
this.fieldMapperErrorHandler = fieldMapperErrorHandler;
return this;
}
/**
* Set a new MapperBuilderErrorHandler. Use to handle to handle Mapper builder error when reading the header.
* @param mapperBuilderErrorHandler the MapperBuilderErrorHandler
* @return the current factory
*/
public CsvMapperFactory mapperBuilderErrorHandler(final MapperBuilderErrorHandler mapperBuilderErrorHandler) {
this.mapperBuilderErrorHandler = mapperBuilderErrorHandler;
return this;
}
/**
* Set a new RowHandlerErrorHandler. Use to handle error thrown by the RowHandler on the forEach call.
* @param rowHandlerErrorHandler the RowHandlerErrorHandler
* @return the current factory
*/
public CsvMapperFactory rowHandlerErrorHandler(final RowHandlerErrorHandler rowHandlerErrorHandler) {
this.rowHandlerErrorHandler = rowHandlerErrorHandler;
return this;
}
/**
*
* @param useAsm false if you want to disable asm usage.
* @return the factory
*/
public CsvMapperFactory useAsm(final boolean useAsm) {
this.useAsm = useAsm;
return this;
}
/**
*
* @param failOnAsm true if don't want to recover from an asm generation failure of the mapper
* @return the factory
*/
public CsvMapperFactory failOnAsm(final boolean failOnAsm) {
this.failOnAsm = failOnAsm;
return this;
}
/**
* change the number of fields threshold after which an asm mapper is not generated.
*
* the default value is calculated from the benchmark results, currently 240.
* @param asmMapperNbFieldsLimit the limit after which it does not use asm for the mapper.
* @return the factory
*/
public CsvMapperFactory asmMapperNbFieldsLimit(final int asmMapperNbFieldsLimit) {
this.asmMapperNbFieldsLimit = asmMapperNbFieldsLimit;
return this;
}
/**
* Number needs to be a power of 2, do not use if you don't know what it does.
* @param maxMethodSize the max method size, needs be a power of 2.
* @return the factory.
*/
public CsvMapperFactory maxMethodSize(final int maxMethodSize) {
this.maxMethodSize = maxMethodSize;
return this;
}
/**
* @param disableAsm true if you want to disable asm.
* @return the current factory
*/
public CsvMapperFactory disableAsm(final boolean disableAsm) {
this.disableAsm = disableAsm;
return this;
}
public CsvMapperFactory defaultDateFormat(final String defaultDateFormat) {
this.defaultDateFormat = defaultDateFormat;
return this;
}
public CsvMapperFactory cellValueReaderFactory(final CellValueReaderFactory cellValueReaderFactory) {
this.cellValueReaderFactory = cellValueReaderFactory;
return this;
}
/**
*
* @param target the targeted class for the mapper
* @param the targeted type
* @return a jdbc mapper that will map to the targeted class.
* @throws MapperBuildingException if an error occurs building the mapper
*/
public CsvMapper newMapper(final Class target) throws MapperBuildingException {
return newMapper((Type)target);
}
public CsvMapper newMapper(final TypeReference target) throws MapperBuildingException {
return newMapper(target.getType());
}
public CsvMapper newMapper(final Type target) throws MapperBuildingException {
ClassMeta classMeta = getClassMeta(target);
return new DynamicCsvMapper(target,
classMeta,
fieldMapperErrorHandler, mapperBuilderErrorHandler,
rowHandlerErrorHandler, defaultDateFormat, columnDefinitions,
propertyNameMatcherFactory, cellValueReaderFactory,
failOnAsm, asmMapperNbFieldsLimit, maxMethodSize);
}
private ClassMeta getClassMeta(Type target) {
return ReflectionService.newInstance(disableAsm, useAsm).getClassMeta(target);
}
/**
* Will create a instance of ResultSetMapperBuilder
* @param target the target class of the mapper
* @param the targeted type
* @return a builder ready to instantiate a mapper or to be customized
* @throws MapperBuildingException if an error occurs building the mapper
*/
public CsvMapperBuilder newBuilder(final Class target) {
return newBuilder((Type)target);
}
public CsvMapperBuilder newBuilder(final TypeReference target) {
return newBuilder(target.getType());
}
public CsvMapperBuilder newBuilder(final Type target) {
ClassMeta classMeta = getClassMeta(target);
CsvMapperBuilder builder = new CsvMapperBuilder(target, classMeta,
mapperBuilderErrorHandler, columnDefinitions,
propertyNameMatcherFactory, cellValueReaderFactory,
0, failOnAsm, asmMapperNbFieldsLimit, maxMethodSize);
builder.fieldMapperErrorHandler(fieldMapperErrorHandler);
builder.rowHandlerErrorHandler(rowHandlerErrorHandler);
builder.setDefaultDateFormat(defaultDateFormat);
return builder;
}
public CsvMapperFactory addAlias(String key, String value) {
return addColumnDefinition(key, CsvColumnDefinition.renameDefinition(value));
}
public CsvMapperFactory addCustomValueReader(String key, CellValueReader cellValueReader) {
return addColumnDefinition(key, CsvColumnDefinition.customReaderDefinition(cellValueReader));
}
public CsvMapperFactory propertyNameMatcherFactory(PropertyNameMatcherFactory propertyNameMatcherFactory) {
this.propertyNameMatcherFactory = propertyNameMatcherFactory;
return this;
}
public CsvMapperFactory addColumnDefinition(String key, CsvColumnDefinition columnDefinition) {
return addColumnDefinition(new CaseInsensitiveFieldKeyNamePredicate(key), columnDefinition);
}
public CsvMapperFactory addColumnDefinition(Predicate predicate, CsvColumnDefinition columnDefinition) {
columnDefinitions.addColumnDefinition(predicate, columnDefinition);
return this;
}
public CsvMapperFactory addKeys(String... columns) {
for(String col : columns) {
addColumnDefinition(col, CsvColumnDefinition.key());
}
return this;
}
}