Package: ParameterValueFactory
ParameterValueFactory
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ParameterValueFactory(MetamodelProvider) |
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create(Object) |
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create(String, String) |
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createUntyped(Object) |
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createVariableValue(Integer) |
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createVariableValue(String) |
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Coverage
1: /**
2: * Copyright (C) 2022 Czech Technical University in Prague
3: *
4: * This program is free software: you can redistribute it and/or modify it under
5: * the terms of the GNU General Public License as published by the Free Software
6: * Foundation, either version 3 of the License, or (at your option) any
7: * later version.
8: *
9: * This program is distributed in the hope that it will be useful, but WITHOUT
10: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
12: * details. You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: */
15: package cz.cvut.kbss.jopa.query.parameter;
16:
17: import cz.cvut.kbss.jopa.sessions.MetamodelProvider;
18: import cz.cvut.kbss.ontodriver.model.LangString;
19:
20: import java.net.URI;
21: import java.net.URISyntaxException;
22: import java.net.URL;
23: import java.time.temporal.TemporalAccessor;
24: import java.time.temporal.TemporalAmount;
25: import java.util.Collection;
26: import java.util.Date;
27: import java.util.Objects;
28: import java.util.stream.Collectors;
29:
30: public class ParameterValueFactory {
31:
32: private final MetamodelProvider metamodelProvider;
33:
34: public ParameterValueFactory(MetamodelProvider metamodelProvider) {
35: this.metamodelProvider = metamodelProvider;
36: }
37:
38: /**
39: * Returns a new variable parameter specification.
40: * <p>
41: * This is the default implementation, if a parameter is not set, a variable is used in the query to represent an
42: * unbound parameter.
43: *
44: * @param name Parameter (variable) name
45: * @return Parameter value object
46: */
47: public ParameterValue createVariableValue(String name) {
48: return new NamedVariableParameterValue(name);
49: }
50:
51: /**
52: * Returns a new variable parameter specification.
53: * <p>
54: * This is the default implementation, if a parameter is not set, a variable is used in the query to represent an
55: * unbound parameter.
56: *
57: * @param position Parameter (variable) position
58: * @return Parameter value object
59: */
60: public ParameterValue createVariableValue(Integer position) {
61: return new PositionalVariableParameterValue(position);
62: }
63:
64: /**
65: * Returns new String parameter value specification.
66: * <p>
67: * The language tag is optional.
68: *
69: * @param value The value
70: * @param language Language tag of the value, e.g. en, cz. Optional
71: * @return Parameter value object
72: */
73: public ParameterValue create(String value, String language) {
74: return new StringParameterValue(value, language);
75: }
76:
77: /**
78: * Returns new parameter value specification.
79: *
80: * @param value The value
81: * @return Parameter value object
82: */
83: public ParameterValue create(Object value) {
84: Objects.requireNonNull(value);
85:• if (value instanceof URI) {
86: return new UriParameterValue((URI) value);
87:• } else if (value instanceof URL) {
88: try {
89: return new UriParameterValue(((URL) value).toURI());
90: } catch (URISyntaxException e) {
91: throw new IllegalArgumentException("Unable to transform the specified URL to URI.", e);
92: }
93:• } else if (value instanceof Boolean) {
94: return new BooleanParameterValue((Boolean) value);
95:• } else if (value instanceof Short) {
96: return new ShortParameterValue((Short) value);
97:• } else if (value instanceof Integer) {
98: return new IntegerParameterValue((Integer) value);
99:• } else if (value instanceof Long) {
100: return new LongParameterValue((Long) value);
101:• } else if (value instanceof Double) {
102: return new DoubleParameterValue((Double) value);
103:• } else if (value instanceof Float) {
104: return new FloatParameterValue((Float) value);
105:• } else if (value instanceof TemporalAccessor) {
106: return new TemporalParameterValue((TemporalAccessor) value);
107:• } else if (value instanceof Date) {
108: return new TemporalParameterValue(((Date) value).toInstant());
109:• } else if (value instanceof TemporalAmount) {
110: return new DurationParameterValue((TemporalAmount) value);
111:• } else if (metamodelProvider.isEntityType(value.getClass())) {
112: return new EntityParameterValue(value, metamodelProvider);
113:• } else if (value instanceof LangString) {
114: return new StringParameterValue((LangString) value);
115:• } else if (value instanceof Collection) {
116: return new CollectionParameterValue(
117: ((Collection<?>) value).stream().map(this::create).collect(Collectors.toList()));
118: } else {
119: return new StringParameterValue(value.toString());
120: }
121: }
122:
123: /**
124: * Returns new untyped parameter value specification.
125: *
126: * @param value The value
127: * @return Parameter value object
128: */
129: public ParameterValue createUntyped(Object value) {
130: return new UntypedParameterValue(Objects.requireNonNull(value));
131: }
132: }