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/*
* Copyright (c) 2011-2024 PrimeFaces Extensions
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.extensions.model.mongo;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import javax.faces.FacesException;
import org.primefaces.model.FilterMeta;
import org.primefaces.model.LazyDataModel;
import org.primefaces.model.SortMeta;
import org.primefaces.util.Constants;
import org.primefaces.util.Lazy;
import org.primefaces.util.SerializableSupplier;
import dev.morphia.Datastore;
import dev.morphia.query.FindOptions;
import dev.morphia.query.Query;
import dev.morphia.query.Sort;
import dev.morphia.query.filters.Filters;
import dev.morphia.query.filters.RegexFilter;
/**
* Basic {@link LazyDataModel} implementation for MongoDB using Morphia.
*
* @param The model class.
*/
public class MorphiaLazyDataModel extends LazyDataModel implements Serializable {
protected Class entityClass;
protected SerializableSupplier ds;
protected String rowKeyField;
// usually will be getId() but can be a user specified method as well when using the 2nd constructor
private transient Lazy rowKeyGetter;
/*
* if the default match mode queries in applyFilters() dont work for a specific field, overridden field queries with the overrideFieldQuery method will add
* BiConsumers to this map, where the key is the field name specified in
*/
private final Map, FilterMeta>> overrides = new HashMap<>();
// consumer to be executed before the query is built, useful to modify the original query
private transient Consumer> prependConsumer;
// global filter consumer (to be implemented by the user)
private transient BiConsumer, FilterMeta> globalFilterConsumer;
/**
* For serialization only
*/
public MorphiaLazyDataModel() {
// for serialization only
}
/**
* Constructs a Morphia lazy data model with selection support.
*
* @param ds the {@link Datastore}
* @param entityClass The entity class
* @param rowKeyField The name of the rowKey property (e.g. "id")
*/
public MorphiaLazyDataModel(final Class entityClass, final SerializableSupplier ds,
final String rowKeyField) {
this();
this.ds = ds;
this.entityClass = entityClass;
this.rowKeyField = rowKeyField;
}
/**
* Constructs a Morphia lazy data model with selection support with the default "id" field being the row key.
*
* @param ds the {@link Datastore}
* @param entityClass The entity class
*/
public MorphiaLazyDataModel(final Class entityClass, final SerializableSupplier ds) {
this(entityClass, ds, "id");
}
@Override
public T getRowData(final String rowKey) {
if (rowKeyField != null) {
for (final T object : getWrappedData()) {
try {
final Object rko = getRowKeyGetter().invoke(object);
final String rk = rko == null ? null : rko.toString();
if (Objects.equals(rk, rowKey)) {
return object;
}
}
catch (final Exception ex) {
throw new FacesException(
"Could not invoke getter for " + rowKeyField + " on " + entityClass.getName(), ex);
}
}
return null;
}
throw new UnsupportedOperationException(
getMessage("Provide a Converter or rowKeyField via constructor or implement getRowData(String rowKey) in %s"
+ ", when basic rowKey algorithm is not used [component=%s,view=%s]."));
}
@Override
public String getRowKey(final T object) {
if (rowKeyField != null) {
try {
final Object rowKey = getRowKeyGetter().invoke(object);
return rowKey == null ? null : rowKey.toString();
}
catch (final InvocationTargetException | IllegalAccessException e) {
throw new FacesException("Could not invoke getter for " + rowKeyField + " on " + entityClass.getName(),
e);
}
}
throw new UnsupportedOperationException(
getMessage("Provide a Converter or rowKeyField via constructor or implement getRowKey(T object) in %s"
+ ", when basic rowKey algorithm is not used [component=%s,view=%s]."));
}
@Override
public int count(final Map map) {
final Query q = this.buildQuery();
final long count = applyFilters(q, map).count();
return (int) count;
}
@Override
public List load(final int first, final int pageSize, final Map sort,
final Map filters) {
final Query q = this.buildQuery();
final FindOptions opt = new FindOptions();
sort.forEach((field, sortData) -> opt.sort(sortData.getOrder().name().equalsIgnoreCase("DESCENDING") ? Sort.descending(field) : Sort.ascending(field)));
this.applyFilters(q, filters);
opt.skip(first).limit(pageSize);
return q.iterator(opt).toList();
}
public Query applyFilters(final Query q, final Map filters) {
filters.forEach((field, metadata) -> {
if (metadata.getFilterValue() != null) {
final BiConsumer, FilterMeta> override = overrides.get(field);
if (override != null) {
override.accept(q, metadata);
}
else {
final Object val = metadata.getFilterValue();
if (metadata.getMatchMode() != null) {
switch (metadata.getMatchMode()) {
case STARTS_WITH:
final RegexFilter regStartsWith = Filters.regex(field);
regStartsWith.pattern("^" + val).caseInsensitive();
q.filter(regStartsWith);
break;
case ENDS_WITH:
final RegexFilter regEndsWith = Filters.regex(field);
regEndsWith.pattern(val + "$").caseInsensitive();
q.filter(regEndsWith);
break;
case CONTAINS:
q.filter(Filters.regex(field).pattern(val + "").caseInsensitive());
break;
case EXACT:
final Object castedValueEx = castedValue(field, val);
if (castedValueEx != null) {
q.filter(Filters.eq(field, castedValueEx));
}
else {
q.filter(Filters.eq(field, val));
}
break;
case LESS_THAN:
final Object castedValueLt = castedValue(field, val);
if (castedValueLt != null) {
q.filter(Filters.lt(field, castedValueLt));
}
else {
q.filter(Filters.lt(field, val));
}
break;
case LESS_THAN_EQUALS:
final Object castedValueLte = castedValue(field, val);
if (castedValueLte != null) {
q.filter(Filters.lte(field, castedValueLte));
}
else {
q.filter(Filters.lte(field, val));
}
break;
case GREATER_THAN:
final Object castedValueGt = castedValue(field, val);
if (castedValueGt != null) {
q.filter(Filters.gt(field, castedValueGt));
}
else {
q.filter(Filters.gt(field, val));
}
break;
case GREATER_THAN_EQUALS:
final Object castedValueGte = castedValue(field, val);
if (castedValueGte != null) {
q.filter(Filters.gte(field, castedValueGte));
}
else {
q.filter(Filters.gte(field, val));
}
break;
case EQUALS:
q.filter(Filters.eq(field, val));
break;
case IN:
if (metadata.getFilterValue().getClass() == Object[].class) {
final Object[] parts = (Object[]) metadata.getFilterValue();
q.filter(Filters.in(field, Arrays.asList(parts)));
}
break;
case BETWEEN:
if (metadata.getFilterValue() instanceof List) {
final List dates = (List) metadata.getFilterValue();
if (dates.size() > 1) { // does this ever have less than 2 items?
q.filter(Filters.gte(field, dates.get(0)), Filters.lte(field, dates.get(1)));
}
}
break;
case NOT_CONTAINS:
q.filter(Filters.regex(field).pattern(val + Constants.EMPTY_STRING).caseInsensitive()
.not());
break;
case NOT_EQUALS:
final Object castedValueNe = castedValue(field, val);
if (castedValueNe != null) {
q.filter(Filters.eq(field, castedValueNe).not());
}
else {
q.filter(Filters.eq(field, val).not());
}
break;
case NOT_STARTS_WITH:
final RegexFilter regStartsWithNot = Filters.regex(field);
regStartsWithNot.pattern("^" + val).caseInsensitive();
q.filter(regStartsWithNot.not());
break;
case NOT_IN:
if (metadata.getFilterValue() instanceof Object[]) {
final Object[] parts = (Object[]) metadata.getFilterValue();
q.filter(Filters.nin(field, Arrays.asList(parts)));
}
break;
case NOT_ENDS_WITH:
final RegexFilter regEndsWithNot = Filters.regex(field);
regEndsWithNot.pattern(val + "$").caseInsensitive();
q.filter(regEndsWithNot.not());
break;
case GLOBAL:
if (globalFilterConsumer != null) {
globalFilterConsumer.accept(q, metadata);
}
break;
default:
throw new UnsupportedOperationException(
"MatchMode " + metadata.getMatchMode() + " not supported");
}
}
}
}
});
return q;
}
public MorphiaLazyDataModel prependQuery(final Consumer> consumer) {
this.prependConsumer = consumer;
return this;
}
public MorphiaLazyDataModel globalFilter(final BiConsumer, FilterMeta> consumer) {
this.globalFilterConsumer = consumer;
return this;
}
public MorphiaLazyDataModel overrideFieldQuery(final String field,
final BiConsumer, FilterMeta> consumer) {
this.overrides.put(field, consumer);
return this;
}
protected Method getRowKeyGetter() {
if (rowKeyGetter == null) {
rowKeyGetter = new Lazy<>(() -> {
try {
return new PropertyDescriptor(rowKeyField, entityClass).getReadMethod();
}
catch (final IntrospectionException e) {
throw new FacesException("Could not access " + rowKeyField + " on " + entityClass.getName(), e);
}
});
}
return rowKeyGetter.get();
}
/**
* checks the data type of the field on the corresponding class and tries to convert the string value to its data type (only handles basic primitive types,
* for more complex data types the field query should be overridden with the overrideFieldQuery method) for example this can be useful when filtering for
* fields which are numbers like ints,floats,doubles and longs where the filterValue will be a string and thus the query wont find any matches since it's
* comparing a string with a number
*
* @param field the field on the entity to cast
* @param value the value to cast based on the field
* @return the newly cast object
*/
private Object castedValue(final String field, final Object value) {
try {
final Field f = entityClass.getDeclaredField(field);
if (f == null) {
return null;
}
if (f.getType().isAssignableFrom(Integer.class) || f.getType().isAssignableFrom(int.class)) {
return Integer.valueOf(value + "");
}
else if (f.getType().isAssignableFrom(Float.class) || f.getType().isAssignableFrom(float.class)) {
return Float.valueOf(value + "");
}
else if (f.getType().isAssignableFrom(Double.class) || f.getType().isAssignableFrom(double.class)) {
return Double.valueOf(value + "");
}
else if (f.getType().isAssignableFrom(Long.class) || f.getType().isAssignableFrom(long.class)) {
return Long.valueOf(value + "");
}
else if (f.getType().isAssignableFrom(Boolean.class) || f.getType().isAssignableFrom(boolean.class)) {
return Boolean.valueOf(value + "");
}
else if (f.getType().isAssignableFrom(String.class)) {
return value + "";
}
}
catch (final Exception e) {
throw new FacesException("Failed to convert " + field + " to its corresponding data type", e);
}
return null;
}
private Query buildQuery() {
final Query q = ds.get().find(entityClass).disableValidation();
if (prependConsumer != null) {
prependConsumer.accept(q);
}
return q;
}
}
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