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JBBPFieldStruct.java
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JBBPFieldStruct.java
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/*
* Copyright 2017 Igor Maznitsa.
*
* Licensed 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 com.igormaznitsa.jbbp.model;
import com.igormaznitsa.jbbp.compiler.JBBPNamedFieldInfo;
import com.igormaznitsa.jbbp.exceptions.JBBPFinderException;
import com.igormaznitsa.jbbp.exceptions.JBBPTooManyFieldsFoundException;
import com.igormaznitsa.jbbp.mapper.JBBPMapper;
import com.igormaznitsa.jbbp.mapper.JBBPMapperCustomFieldProcessor;
import com.igormaznitsa.jbbp.model.finder.JBBPFieldFinder;
import com.igormaznitsa.jbbp.utils.JBBPUtils;
import java.util.List;
import static com.igormaznitsa.jbbp.utils.JBBPUtils.ARRAY_FIELD_EMPTY;
/**
* Describes a structure.
*
* @since 1.0
*/
public final class JBBPFieldStruct extends JBBPAbstractField implements JBBPFieldFinder {
private static final long serialVersionUID = -5862961302858335702L;
/**
* Structure fields.
*/
private final JBBPAbstractField[] fields;
/**
* A Constructor.
*
* @param name a field name info, it can be null
* @param fields a field array, it must not be null
*/
public JBBPFieldStruct(final JBBPNamedFieldInfo name, final JBBPAbstractField[] fields) {
super(name);
JBBPUtils.assertNotNull(fields, "Array of fields must not be null");
this.fields = fields;
}
/**
* A Constructor.
*
* @param name a field name info, it can be null
* @param fields a field list, it must not be null
*/
public JBBPFieldStruct(final JBBPNamedFieldInfo name, final List<JBBPAbstractField> fields) {
this(name, fields.toArray(ARRAY_FIELD_EMPTY));
}
/**
* Get the fields of the structure as an array.
*
* @return the field array of the structure.
*/
public JBBPAbstractField[] getArray() {
return this.fields.clone();
}
@Override
public JBBPAbstractField findFieldForPath(final String fieldPath) {
final String[] parsedName = JBBPUtils.splitString(JBBPUtils.normalizeFieldNameOrPath(fieldPath), '.');
JBBPAbstractField found = this;
final int firstIndex;
if ("".equals(this.getFieldName())) {
firstIndex = 0;
} else if (parsedName[0].equals(this.getNameInfo().getFieldName())) {
firstIndex = 1;
found = this;
} else {
firstIndex = 0;
found = null;
}
for (int i = firstIndex; found != null && i < parsedName.length; i++) {
if (found instanceof JBBPFieldStruct) {
found = ((JBBPFieldStruct) found).findFieldForName(parsedName[i]);
} else {
throw new JBBPFinderException("Detected a field instead of a structure as one of nodes in the path '" + fieldPath + '\'', fieldPath, null);
}
}
return found;
}
@Override
public JBBPAbstractField findFieldForName(final String name) {
final String normalizedName = JBBPUtils.normalizeFieldNameOrPath(name);
JBBPAbstractField result = null;
for (final JBBPAbstractField f : this.fields) {
if (normalizedName.equals(f.getFieldName())) {
result = f;
break;
}
}
return result;
}
@Override
public <T extends JBBPAbstractField> T findFieldForType(final Class<T> fieldType) {
T result = null;
int counter = 0;
for (final JBBPAbstractField f : this.fields) {
if (fieldType.isAssignableFrom(f.getClass())) {
if (result == null) {
result = fieldType.cast(f);
}
counter++;
}
}
if (counter > 1) {
throw new JBBPTooManyFieldsFoundException(counter, "Detected more than one field", null, fieldType);
}
return result;
}
@Override
public <T extends JBBPAbstractField> T findFirstFieldForType(final Class<T> fieldType) {
T result = null;
for (final JBBPAbstractField f : this.fields) {
if (fieldType.isAssignableFrom(f.getClass())) {
result = fieldType.cast(f);
break;
}
}
return result;
}
@Override
public <T extends JBBPAbstractField> T findLastFieldForType(final Class<T> fieldType) {
T result = null;
for (int i = this.fields.length - 1; i >= 0; i--) {
final JBBPAbstractField f = this.fields[i];
if (fieldType.isAssignableFrom(f.getClass())) {
result = fieldType.cast(f);
break;
}
}
return result;
}
@Override
public <T extends JBBPAbstractField> T findFieldForNameAndType(final String fieldName, final Class<T> fieldType) {
final String normalizedName = JBBPUtils.normalizeFieldNameOrPath(fieldName);
T result = null;
for (final JBBPAbstractField f : this.fields) {
if (fieldType.isAssignableFrom(f.getClass()) && normalizedName.equals(f.getFieldName())) {
result = fieldType.cast(f);
break;
}
}
return result;
}
@Override
public boolean nameExists(final String fieldName) {
final String normalizedName = JBBPUtils.normalizeFieldNameOrPath(fieldName);
boolean result = false;
for (final JBBPAbstractField f : this.fields) {
if (normalizedName.equals(f.getFieldName())) {
result = true;
break;
}
}
return result;
}
@Override
public boolean pathExists(final String fieldPath) {
final String normalizedPath = JBBPUtils.normalizeFieldNameOrPath(fieldPath);
boolean result = false;
for (final JBBPAbstractField f : this.fields) {
if (normalizedPath.equals(f.getFieldPath())) {
result = true;
break;
}
}
return result;
}
@Override
@SuppressWarnings("unchecked")
public <T extends JBBPAbstractField> T findFieldForPathAndType(final String fieldPath, final Class<T> fieldType) {
final JBBPAbstractField field = this.findFieldForPath(fieldPath);
T result = null;
if (field != null && fieldType.isAssignableFrom(field.getClass())) {
result = fieldType.cast(field);
}
return result;
}
/**
* Map the structure fields to a class fields.
*
* @param <T> a class type
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final Class<T> mappingClass) {
return mapTo(mappingClass, null);
}
/**
* Map the structure fields to a class fields.
*
* @param <T> a class type
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param flags special flags to tune mapping
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final Class<T> mappingClass, final int flags) {
return mapTo(mappingClass, null, flags);
}
/**
* Map the structure fields to a class fields.
*
* @param <T> a class type
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param customFieldProcessor a custom field processor to provide values for
* custom mapping fields, it can be null if there is not any custom field
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final Class<T> mappingClass, final JBBPMapperCustomFieldProcessor customFieldProcessor) {
return JBBPMapper.map(this, mappingClass, customFieldProcessor);
}
/**
* Map the structure fields to a class fields.
*
* @param <T> a class type
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param customFieldProcessor a custom field processor to provide values for
* custom mapping fields, it can be null if there is not any custom field
* @param flags special flags to tune mapping process
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final Class<T> mappingClass, final JBBPMapperCustomFieldProcessor customFieldProcessor, final int flags) {
return JBBPMapper.map(this, mappingClass, customFieldProcessor, flags);
}
/**
* Find a structure by its path and map the structure fields to a class
* fields.
*
* @param <T> a class type
* @param path the path to the structure to be mapped, must not be null
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final String path, final Class<T> mappingClass) {
return JBBPMapper.map(this, path, mappingClass);
}
/**
* Find a structure by its path and map the structure fields to a class
* fields.
*
* @param <T> a class type
* @param path the path to the structure to be mapped, must not be null
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param flags special flags to tune mapping process
* @return a mapped instance of the class, must not be null
* @see JBBPMapper#FLAG_IGNORE_MISSING_VALUES
* @since 1.1
*/
public <T> T mapTo(final String path, final Class<T> mappingClass, final int flags) {
return JBBPMapper.map(this, path, mappingClass, flags);
}
/**
* Find a structure by its path and map the structure fields to a class
* fields.
*
* @param <T> a class type
* @param path the path to the structure to be mapped, must not be null
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param customFieldProcessor a custom field processor to provide values for custom mapping fields, it can be null if there is not any custom field
* @return a mapped instance of the class, must not be null
*/
public <T> T mapTo(final String path, final Class<T> mappingClass, final JBBPMapperCustomFieldProcessor customFieldProcessor) {
return JBBPMapper.map(this, path, mappingClass, customFieldProcessor);
}
/**
* Find a structure by its path and map the structure fields to a class
* fields.
*
* @param <T> a class type
* @param path the path to the structure to be mapped, must not be null
* @param mappingClass a mapping class to be mapped by the structure fields,
* must not be null and must have the default constructor
* @param customFieldProcessor a custom field processor to provide values for custom mapping fields, it can be null if there is not any custom field
* @param flags special flags to tune mapping process
* @return a mapped instance of the class, must not be null
* @see JBBPMapper#FLAG_IGNORE_MISSING_VALUES
* @since 1.1
*/
public <T> T mapTo(final String path, final Class<T> mappingClass, final JBBPMapperCustomFieldProcessor customFieldProcessor, final int flags) {
return JBBPMapper.map(this, path, mappingClass, customFieldProcessor, flags);
}
/**
* Map the structure fields to object fields.
*
* @param objectToMap an object to map fields of the structure, must not be
* null
* @return the same object from the arguments but with filled fields by values
* of the structure
*/
public Object mapTo(final Object objectToMap) {
return this.mapTo(objectToMap, null);
}
/**
* Map the structure fields to object fields.
*
* @param objectToMap an object to map fields of the structure, must not be
* null
* @param flags special flags to tune mapping process
* @return the same object from the arguments but with filled fields by values
* of the structure
* @see JBBPMapper#FLAG_IGNORE_MISSING_VALUES
* @since 1.1
*/
public Object mapTo(final Object objectToMap, final int flags) {
return this.mapTo(objectToMap, null, flags);
}
/**
* Map the structure fields to object fields.
*
* @param objectToMap an object to map fields of the structure, must not be
* null
* @param customFieldProcessor a custom field processor to provide values for
* custom mapping fields, it can be null if there is not any custom field
* @return the same object from the arguments but with filled fields by values
* of the structure
*/
public Object mapTo(final Object objectToMap, final JBBPMapperCustomFieldProcessor customFieldProcessor) {
return JBBPMapper.map(this, objectToMap, customFieldProcessor);
}
/**
* Map the structure fields to object fields.
*
* @param objectToMap an object to map fields of the structure, must not be
* null
* @param customFieldProcessor a custom field processor to provide values for
* custom mapping fields, it can be null if there is not any custom field
* @param flags special flags to tune mapping process
* @return the same object from the arguments but with filled fields by values
* of the structure
* @see JBBPMapper#FLAG_IGNORE_MISSING_VALUES
* @since 1.1
*/
public Object mapTo(final Object objectToMap, final JBBPMapperCustomFieldProcessor customFieldProcessor, final int flags) {
return JBBPMapper.map(this, objectToMap, customFieldProcessor, flags);
}
@Override
public String getTypeAsString() {
return "{}";
}
}